Join-Path : Cannot bind argument to parameter 'Path' because it is null - c++

I want to build this open source project from source for contributing. I am following this docs for windows. I cloned the repo and install chocolatey as mention. Then I am executing the commands in "prepare the enviorment section" . I was able to run 1st command correctly
PS A:\wasmedgebuild\WasmEdge> choco install cmake ninja vswhere
But when I run second one .
PS A:\wasmedgebuild\WasmEdge> $vsPath = (vswhere -latest -property
installationPath) Import-Module (Join-Path $vsPath
"Common7\Tools\Microsoft.VisualStudio.DevShell.dll") Enter-VsDevShell
-VsInstallPath $vsPath -SkipAutomaticLocation -DevCmdArguments "-arch=x64 -host_arch=x64 -winsdk=10.0.19041.0"
I am getting this error:
Join-Path : Cannot bind argument to parameter 'Path' because it is null.
At line:2 char:26
+ Import-Module (Join-Path $vsPath "Common7\Tools\Microsoft.VisualStudi ...
+ ~~~~~~~
+ CategoryInfo : InvalidData: (:) [Join-Path], ParameterBindingValidationException
+ FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,Microsoft.PowerShell.Commands.JoinPathCommand
Enter-VsDevShell : The term 'Enter-VsDevShell' is not recognized as the name of a cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:3 char:1
+ Enter-VsDevShell -VsInstallPath $vsPath -SkipAutomaticLocation -DevCm ...
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (Enter-VsDevShell:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
Screenshot
I don't know what is the problem. Am I doing it in wrong way?

Related

The term 'googet' is not recognized as the name of a cmdlet, function, script file, or operable program

I am following the instructions in here to install the Ops agent on my local Windows machine.
These are the steps that I follow in PowerShell (as admin):
(New-Object Net.WebClient).DownloadFile("https://dl.google.com/cloudagents/add-google-cloud-ops-agent-repo.ps1", "${env:UserProfile}\add-google-cloud-ops-agent-repo.ps1") Invoke-Expression "${env:UserProfile}\add-google-cloud-ops-agent-repo.ps1 -AlsoInstall"
As soon as I execute this, the output is:
googet : The term 'googet' is not recognized as the name of a cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At C:\Users\bot_runner_01\add-google-cloud-ops-agent-repo.ps1:171 char:10
+ if (! (googet listrepos | Select-String -quiet "https://packages.cl ...
+ ~~~~~~
+ CategoryInfo : ObjectNotFound: (googet:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
googet : The term 'googet' is not recognized as the name of a cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At C:\Users\bot_runner_01\add-google-cloud-ops-agent-repo.ps1:198 char:24
+ if (! $Version -and (googet listrepos | Select-String -quiet "https ...
+ ~~~~~~
+ CategoryInfo : ObjectNotFound: (googet:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
googet : The term 'googet' is not recognized as the name of a cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At C:\Users\bot_runner_01\add-google-cloud-ops-agent-repo.ps1:205 char:10
+ if (! (googet installed google-cloud-ops-agent 2>&1 | Select-String ...
+ ~~~~~~
+ CategoryInfo : ObjectNotFound: (googet:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
No changes made.
How can I fix this? thank you
I had the same issue, found that running the 'Installing the guest environment' scripts in the page below worked for me:
https://cloud.google.com/compute/docs/images/install-guest-environment?authuser=0#installing_guest_environment

CommandNotFoundException errors in Powershell script

I'm using this script to try to upload files to an S3 bucket using cURL.
#S3 parameters
$S3KEY="AKIAYZL7ANTULMU355OD"
$S3SECRET="AKIAYZL7ANTULMU355OD"
$S3BUCKET="quixel-ml-team-data"
$S3STORAGETYPE="STANDARD" #REDUCED_REDUNDANCY or STANDARD etc.
$AWSREGION="us-west-2"
file_path="C:\Users\DELL\AppData\Local\Temp\input_settings.txt"
aws_path="seam-removal\"
bucket="${S3BUCKET}"
date=$(date -R)
acl="x-amz-acl:private"
content_type="application/x-compressed-tar"
storage_type="x-amz-storage-class:${S3STORAGETYPE}"
string="PUT\n\n$content_type\n$date\n$acl\n$storage_type\n/$bucket$aws_path${file_path##/*/}"
signature=$(echo -en "${string}" | openssl sha1 -hmac "${S3SECRET}" -binary | base64)
curl -s --retry 3 --retry-delay 10 -X PUT -T "$file_path" \
-H "Host: $bucket.${AWSREGION}.amazonaws.com" \
-H "Date: $date" \
-H "Content-Type: $content_type" \
-H "$storage_type" \
-H "$acl" \
-H "Authorization: AWS ${S3KEY}:$signature" \
"https://$bucket.${AWSREGION}.amazonaws.com$aws_path${file_path##/*/}"
However, I'm getting these errors. Any idea about them? Sorry, I'm a novice at this sort of programming.
file_path=C:\Users\DELL\AppData\Local\Temp\input_settings.txt : The term
'file_path=C:\Users\DELL\AppData\Local\Temp\input_settings.txt' is not recognized as the name of a cmdlet, function,
script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is
correct and try again.
At C:\Users\DELL\Desktop\Abdullah Chand\quixel-ml-khalid-chand\script_upload_to_aws_using_curl.ps1:11 char:1
+ file_path="C:\Users\DELL\AppData\Local\Temp\input_settings.txt"
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (file_path=C:\Us...ut_settings.txt:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
aws_path=seam-removal\ : The term 'aws_path=seam-removal\' is not recognized as the name of a cmdlet, function, script
file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct
and try again.
At C:\Users\DELL\Desktop\Abdullah Chand\quixel-ml-khalid-chand\script_upload_to_aws_using_curl.ps1:12 char:1
+ aws_path="seam-removal\"
+ ~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (aws_path=seam-removal\:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
bucket=${S3BUCKET} : The term 'bucket=${S3BUCKET}' is not recognized as the name of a cmdlet, function, script file,
or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and
try again.
At C:\Users\DELL\Desktop\Abdullah Chand\quixel-ml-khalid-chand\script_upload_to_aws_using_curl.ps1:13 char:1
+ bucket="${S3BUCKET}"
+ ~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (bucket=${S3BUCKET}:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
date=$(date -R) : The term 'date=$(date -R)' is not recognized as the name of a cmdlet, function, script file, or
operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try
again.
At C:\Users\DELL\Desktop\Abdullah Chand\quixel-ml-khalid-chand\script_upload_to_aws_using_curl.ps1:14 char:1
+ date=$(date -R)
+ ~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (date=$(date -R):String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
acl=x-amz-acl:private : The term 'acl=x-amz-acl:private' is not recognized as the name of a cmdlet, function, script
file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct
and try again.
At C:\Users\DELL\Desktop\Abdullah Chand\quixel-ml-khalid-chand\script_upload_to_aws_using_curl.ps1:15 char:1
+ acl="x-amz-acl:private"
+ ~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (acl=x-amz-acl:private:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
content_type=application/x-compressed-tar : The term 'content_type=application/x-compressed-tar' is not recognized as
the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was
included, verify that the path is correct and try again.
At C:\Users\DELL\Desktop\Abdullah Chand\quixel-ml-khalid-chand\script_upload_to_aws_using_curl.ps1:16 char:1
+ content_type="application/x-compressed-tar"
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (content_type=ap...-compressed-tar:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
storage_type=x-amz-storage-class:${S3STORAGETYPE} : The term 'storage_type=x-amz-storage-class:${S3STORAGETYPE}' is
not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or
if a path was included, verify that the path is correct and try again.
At C:\Users\DELL\Desktop\Abdullah Chand\quixel-ml-khalid-chand\script_upload_to_aws_using_curl.ps1:17 char:1
+ storage_type="x-amz-storage-class:${S3STORAGETYPE}"
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (storage_type=x-...{S3STORAGETYPE}:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
string=PUT\n\n$content_type\n$date\n$acl\n$storage_type\n/$bucket$aws_path${file_path##/*/} : The module 'string=PUT'
could not be loaded. For more information, run 'Import-Module string=PUT'.
At C:\Users\DELL\Desktop\Abdullah Chand\quixel-ml-khalid-chand\script_upload_to_aws_using_curl.ps1:18 char:1
+ string="PUT\n\n$content_type\n$date\n$acl\n$storage_type\n/$bucket$aw ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (string=PUT\n\n$...file_path##/*/}:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CouldNotAutoLoadModule
signature=$(echo -en "${string}" | openssl sha1 -hmac "${S3SECRET}" -binary | base64) : The term 'signature=$(echo -en
"${string}" | openssl sha1 -hmac "${S3SECRET}" -binary | base64)' is not recognized as the name of a cmdlet, function,
script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is
correct and try again.
At C:\Users\DELL\Desktop\Abdullah Chand\quixel-ml-khalid-chand\script_upload_to_aws_using_curl.ps1:19 char:1
+ signature=$(echo -en "${string}" | openssl sha1 -hmac "${S3SECRET}" - ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (signature=$(ech...inary | base64):String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
Invoke-WebRequest : Parameter cannot be processed because the parameter name 'T' is ambiguous. Possible matches
include: -TimeoutSec -TransferEncoding.
At C:\Users\DELL\Desktop\Abdullah Chand\quixel-ml-khalid-chand\script_upload_to_aws_using_curl.ps1:20 char:43
+ curl -s --retry 3 --retry-delay 10 -X PUT -T "$file_path" \
+ ~~
+ CategoryInfo : InvalidArgument: (:) [Invoke-WebRequest], ParameterBindingException
+ FullyQualifiedErrorId : AmbiguousParameter,Microsoft.PowerShell.Commands.InvokeWebRequestCommand
-H : The term '-H' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At C:\Users\DELL\Desktop\Abdullah Chand\quixel-ml-khalid-chand\script_upload_to_aws_using_curl.ps1:21 char:5
+ -H "Host: $bucket.${AWSREGION}.amazonaws.com" \
+ ~~
+ CategoryInfo : ObjectNotFound: (-H:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
-H : The term '-H' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At C:\Users\DELL\Desktop\Abdullah Chand\quixel-ml-khalid-chand\script_upload_to_aws_using_curl.ps1:22 char:5
+ -H "Date: $date" \
+ ~~
+ CategoryInfo : ObjectNotFound: (-H:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
-H : The term '-H' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At C:\Users\DELL\Desktop\Abdullah Chand\quixel-ml-khalid-chand\script_upload_to_aws_using_curl.ps1:23 char:5
+ -H "Content-Type: $content_type" \
+ ~~
+ CategoryInfo : ObjectNotFound: (-H:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
-H : The term '-H' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At C:\Users\DELL\Desktop\Abdullah Chand\quixel-ml-khalid-chand\script_upload_to_aws_using_curl.ps1:24 char:5
+ -H "$storage_type" \
+ ~~
+ CategoryInfo : ObjectNotFound: (-H:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
-H : The term '-H' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At C:\Users\DELL\Desktop\Abdullah Chand\quixel-ml-khalid-chand\script_upload_to_aws_using_curl.ps1:25 char:5
+ -H "$acl" \
+ ~~
+ CategoryInfo : ObjectNotFound: (-H:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
-H : The term '-H' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At C:\Users\DELL\Desktop\Abdullah Chand\quixel-ml-khalid-chand\script_upload_to_aws_using_curl.ps1:26 char:5
+ -H "Authorization: AWS ${S3KEY}:$signature" \
~~
CategoryInfo : ObjectNotFound: (-H:String) [], CommandNotFoundException
FullyQualifiedErrorId : CommandNotFoundException
You're mixing a PowerShell with a traditional Unix script.
Further, there's no need to call out the external utilities like OpenSSL and Curl since PowerShell has similar capabilities built in. To sign the URL and perform the Upload without using the AWS SDK, the script would look something like this:
$method = 'PUT'
$service = 's3'
$bucket = "SAMPLES3BUCKETNAME"
$key = 'example-s3-key.txt'
$local_file = "test.txt"
$region = 'us-west-2'
$host1 = $bucket + '.s3-' + $region + '.amazonaws.com'
$access_key = 'SAMPLEACCESSKEY'
$secret_key = 'SAMPLESECRETKEY'
function HmacSHA256($message, $secret)
{
$hmacsha = New-Object System.Security.Cryptography.HMACSHA256
$hmacsha.key = $secret
$signature = $hmacsha.ComputeHash([Text.Encoding]::ASCII.GetBytes($message))
return $signature
}
function getSignatureKey($key, $dateStamp, $regionName, $serviceName)
{
$kSecret = [Text.Encoding]::UTF8.GetBytes(("AWS4" + $key).toCharArray())
$kDate = HmacSHA256 $dateStamp $kSecret;
$kRegion = HmacSHA256 $regionName $kDate;
$kService = HmacSHA256 $serviceName $kRegion;
$kSigning = HmacSHA256 "aws4_request" $kService;
return $kSigning
}
function hash($request)
{
$hasher = [System.Security.Cryptography.SHA256]::Create()
$content = [Text.Encoding]::UTF8.GetBytes($request)
$bytes = $hasher.ComputeHash($content)
return ($bytes|ForEach-Object ToString x2) -join ''
}
$now = [DateTime]::UtcNow
$amz_date = $now.ToString('yyyyMMddTHHmmssZ')
$datestamp = $now.ToString('yyyyMMdd')
$signed_headers = 'host'
$credential_scope = $datestamp + '/' + $region + '/' + $service + '/' + 'aws4_request'
$canonical_querystring = 'X-Amz-Algorithm=AWS4-HMAC-SHA256'
$canonical_querystring += '&X-Amz-Credential=' + [uri]::EscapeDataString(($access_key + '/' + $credential_scope))
$canonical_querystring += '&X-Amz-Date=' + $amz_date
$canonical_querystring += '&X-Amz-Expires=300'
$canonical_querystring += '&X-Amz-SignedHeaders=' + $signed_headers
$canonical_headers = 'host:' + $host1 + "`n"
$canonical_request = $method + "`n"
$canonical_request += "/" + $key + "`n"
$canonical_request += $canonical_querystring + "`n"
$canonical_request += $canonical_headers + "`n"
$canonical_request += $signed_headers + "`n"
$canonical_request += "UNSIGNED-PAYLOAD"
$algorithm = 'AWS4-HMAC-SHA256'
$canonical_request_hash = hash -request $canonical_request
$string_to_sign = $algorithm + "`n"
$string_to_sign += $amz_date + "`n"
$string_to_sign += $credential_scope + "`n"
$string_to_sign += $canonical_request_hash
$signing_key = getSignatureKey $secret_key $datestamp $region $service
$signature = HmacSHA256 -secret $signing_key -message $string_to_sign
$signature = ($signature|ForEach-Object ToString x2) -join ''
$canonical_querystring += '&X-Amz-Signature=' + $signature
$request_url = "http://" + $host1 + "/" + $key + "?" + $canonical_querystring
# Write-Host $request_url
# Using Curl:
# curl.exe '-s', '--retry', '3', '--retry-delay', '10', '-X', 'PUT', '-T', $local_file, $request_url
# Or just put to the URL directly:
Invoke-RestMethod -Uri $request_url -Method Put -InFile $local_file

Executing c++ code in VS code without script failed

While Executing the c++ code on VS through command terminal, getting below error. Coupld you please comment on this.
PS D:\Test> .\a.exe
Program 'a.exe' failed to run: The system cannot find the file specifiedAt line:1 char:1
+ .\a.exe
+ ~~~~~~~.
At line:1 char:1
+ .\a.exe
+ ~~~~~~~
+ CategoryInfo : ResourceUnavailable: (:) [], ApplicationFailedException
+ FullyQualifiedErrorId : NativeCommandFailed
PS D:\Test>

AWS Encryption SDK documentation example

I was following the AWS documentation example for envelope encryption in which there is a command for PowerShell. The command doesn't work on my PC so I need someone to help me figure out why. Below is the link to the documentation;
https://docs.aws.amazon.com/encryption-sdk/latest/developer-guide/crypto-cli-examples.html
Below is the error I get when I follow the instructions in the documentations;
PS C:> $CmkArn = arn:aws:kms:us-west-1:404148889442:key/c6b58e8e-f890-4d97-a417-f5bba5e6af89
arn:aws:kms:us-west-1:404148889442:key/c6b58e8e-f890-4d97-a417-f5bba5e6af89 : The term
'arn:aws:kms:us-west-1:404148889442:key/c6b58e8e-f890-4d97-a417-f5bba5e6af89' is not recognized as the name of a cmdlet, function, script
file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:11
$CmkArn = arn:aws:kms:us-west-1:404148889442:key/c6b58e8e-f890-4d97-a ...
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CategoryInfo : ObjectNotFound: (arn:aws:kms:us-...17-f5bba5e6af89:String) [], CommandNotFoundException
FullyQualifiedErrorId : CommandNotFoundException
The syntax in their example is wrong, this is how it should be written:
# To run this example, replace the fictitious key ARN with a valid value.
PS C:\> $CmkArn = "arn:aws:kms:us-west-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab"
PS C:\> aws-encryption-cli --encrypt `
--input Hello.txt `
--master-keys key=$CmkArn `
--metadata-output $home\Metadata.txt `
--encryption-context purpose=test `
--output .
The fictitious ARN needs quotes around it.

cloudformation windows userdata cfn-init.exe end of line issues

Working through adding some cfn-init to request data from an S3 bucket.
I believe I've got a syntax problem with the cfn-init.exe call from powershell but cannot seem to find where. This structure was taken from the Bootstrapping AWS CloudFormation Windows Stacks AWS Example. I've also tried adapting from the bash structure from AWS cfn-init documentation with no success.
"UserData": {"Fn::Base64": {"Fn::Join": ["\n", [
"<powershell>",
...
"cfn-init.exe -v -s", { "Ref" : "AWS::StackName" },
" -r EC2Instance",
"</powershell>"
"Metadata" : {
"AWS::CloudFormation::Init" : {
"config": {
"files" : {
"C:\\chef\\validator.pem" : {
"source" : "https://s3.amazonaws.com/dtcfstorage/validator.pem",
"authentication" : "s3creds"
}
}
},
"AWS::CloudFormation::Authentication" : {
"s3creds" : {
"type" : "S3",
"roleName" : "awss3chefkeyaccess"
}
}
}
}
The cfn-init.exe is being run but errors out as the arguments are passing to new lines:
2018/05/21 15:35:08Z: Message: The errors from user scripts: Usage: cfn-init.exe [options]
or: cfn-init.exe [options]
or: cat | cfn-init.exe [options] -
cfn-init.exe: error: -s option requires an argument
cloudinittest : The term 'cloudinittest' is not recognized as the name of a cmdlet, function, script file, or operable
program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At C:\Windows\TEMP\UserScript.ps1:30 char:1
+ cloudinittest
+ ~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (cloudinittest:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
-r : The term '-r' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At C:\Windows\TEMP\UserScript.ps1:31 char:2
+ -r EC2Instance
+ ~~
+ CategoryInfo : ObjectNotFound: (-r:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
It's because you have joined using \n at the top. Every arg to the join function will separate by a newline event if you type some on the same line!
Therefore, your command cfn-init has been interpreted as:
cfn-init.exe -v -s
stack-name
-r EC2Instance
...
Since the line is broken, the command doesn't get run properly.
As such, you can join by a space character. You can try replacing the above by this:
{"Fn::Join": [" ", ["cfn-init.exe -v -s", {"Ref":"AWS::StackName"},
"-r EC2Instance"]}