AWS cloud formation cannot valid instance id - amazon-web-services

Question

I am creating a cloudformation template in AWS. I am still getting an error:
WaitCondition received failed message: 'ValidationError:' for uniqueId: i-04885f92b0b4a99ab
I have tried change instance id. and many other way. none of these works.
The error occurred on AWS::CloudFormation::WaitCondition
{
"AWSTemplateFormatVersion": "2010-09-09",
"Parameters": {
"KeyName": {
"Description": "Name of an existing EC2 KeyPair to enable SSH access to the instances",
"Type": "AWS::EC2::KeyPair::KeyName"
},
"InstanceType": {
"Description": "FormEngine EC2 instance type",
"Type": "String",
"Default": "t2.micro"
}
},
"Mappings": {
"AWSInstanceType2Arch": {
"t2.micro": {
"Arch": "64"
}
},
"AWSRegionArch2AMI": {
"us-west-2": {
"64": "ami-f2d3638a"
}
}
},
"Resources": {
"WebServerGroup": {
"Type": "AWS::EC2::SecurityGroup",
"Properties": {
"GroupDescription": "Enable SSH and HTTP access",
"SecurityGroupIngress": [
{
"IpProtocol": "tcp",
"FromPort": "22",
"ToPort": "22",
"CidrIp": "0.0.0.0/0"
},
{
"IpProtocol": "tcp",
"FromPort": "80",
"ToPort": "80",
"CidrIp": "0.0.0.0/0"
}
]
}
},
"CfnUser": {
"Type": "AWS::IAM::User",
"Properties": {
"Path": "/",
"Policies": [
{
"PolicyName": "Admin",
"PolicyDocument": {
"Statement": [
{
"Effect": "Allow",
"Action": "*",
"Resource": "*"
}
]
}
}
]
}
},
"HostKeys": {
"Type": "AWS::IAM::AccessKey",
"Properties": {
"UserName": {
"Ref": "CfnUser"
}
}
},
"WebServer": {
"Type": "AWS::EC2::Instance",
"Metadata": {
"AWS::CloudFormation::Init": {
"config": {
"packages": {
"yum": {
"java-1.6.0-openjdk": [],
"tomcat6": [],
"httpd": []
}
},
"files": {
"/var/www/html/index.html": {
"source": "http://a00807428-lab02/index.html",
"mode": "000600",
"owner": "apache",
"group": "apache"
},
"/var/www/html/index.html": {
"source": "http://a00807428-lab02/index.html",
"mode": "000600",
"owner": "apache",
"group": "apache"
}
}
}
}
},
"Properties": {
"ImageId": {
"Fn::FindInMap": [
"AWSRegionArch2AMI",
{
"Ref": "AWS::Region"
},
{
"Fn::FindInMap": [
"AWSInstanceType2Arch",
{
"Ref": "InstanceType"
},
"Arch"
]
}
]
},
"InstanceType": {
"Ref": "InstanceType"
},
"SecurityGroups": [
{
"Ref": "WebServerGroup"
}
],
"KeyName": {
"Ref": "KeyName"
},
"Tags": [
{
"Key": "Name",
"Value": "WebServer"
}
],
"UserData": {
"Fn::Base64": {
"Fn::Join": [
"",
[
"#!/bin/bash -v\n",
"date > /home/ec2-user/starttime\n",
"yum update -y aws-cfn-bootstrap\n",
"## Error reporting helper function\n",
"function error_exit\n",
"{\n",
" /opt/aws/bin/cfn-signal -e 1 -r \"$1\" '",
{
"Ref": "WaitHandle"
},
"'\n",
" exit 1\n",
"}\n",
"## Initialize CloudFormation bits\n",
"/opt/aws/bin/cfn-init -v -s ",
{
"Ref": "AWS::StackId"
},
" -r FormEngine",
" --access-key ",
{
"Ref": "HostKeys"
},
" --secret-key ",
{
"Fn::GetAtt": [
"HostKeys",
"SecretAccessKey"
]
},
" --region ",
{
"Ref": "AWS::Region"
},
" > /tmp/cfn-init.log 2>&1 || error_exit $(</tmp/cfn-init.log)\n",
"# Configure Apache HTTPD\n",
"chkconfig httpd on\n",
"chkconfig --level 345 httpd on\n",
"# Start servers\n",
"/etc/init.d/httpd start\n",
"# Send signal to WaitHandle that the setup is completed\n",
"/opt/aws/bin/cfn-signal",
" -e 0",
" '",
{
"Ref": "WaitHandle"
},
"'",
"\n",
"date > /home/ec2-user/stoptime"
]
]
}
}
}
},
"WaitHandle": {
"Type": "AWS::CloudFormation::WaitConditionHandle"
},
"WaitCondition": {
"Type": "AWS::CloudFormation::WaitCondition",
"DependsOn": "WebServer",
"Properties": {
"Handle": {
"Ref": "WaitHandle"
},
"Timeout": "1200"
}
},
"IPAddress": {
"Type": "AWS::EC2::EIP"
},
"IPAssoc": {
"Type": "AWS::EC2::EIPAssociation",
"Properties": {
"InstanceId": {
"Ref": "WebServer"
},
"EIP": {
"Ref": "IPAddress"
}
}
}
},
"Outputs": {
"InstanceIPAddress": {
"Value": {
"Ref": "IPAddress"
},
"Description": "public IP address of the new WebServer"
},
"InstanceName": {
"Value": {
"Fn::GetAtt": [
"WebServer",
"PublicDnsName"
]
},
"Description": "public DNS name of the new WebServer"
}
}
}
succeed to created cloudformation.