I'm getting this error while testing the contract. TypeError: Cannot read properties of undefined (reading 'address') [closed] - unit-testing

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var DonorRegisterJSON = require(path.join(__dirname,"build/contracts/Request.json"));//Donor Contract Variable
web3 = new Web3('http://localhost:8545');//Connecting to Blockchain rpc endpoint
//Initialize the account and contract instances
account = "0x1ac013d849c86f23f2e95eb4e68cbc20bf97dc93";//account Address for devmode 0xc22e2df070d7552dfe27b976efeb8bc6e76b077a
contractaddress = DonorRegisterJSON.networks['4002'].address;//Contract Address
//Initialize the contract Abi
contractabi = DonorRegisterJSON.abi;
//Contract Instance
Contractinstance = new web3.eth.Contract(contractabi,contractaddress);//contract instance
how to resolve this type error

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Why does this need auto? [closed]

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auto data = new char[480][640][3]();
char data = new char[480][640][3]();
First works.
Second doesnt.
Why? Isn't auto supposed to just replace itself with the type of the initializer?
Because the type isn't char. The type is char(*)[640][3] and the declaration would be written as
char (*data)[640][3] = new char[480][640][3]();

AWS Cost Categories: Failed to create/update Cost Category [closed]

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Someone encountered this error while updating or creating a new cost category? This is my first time encountering this and I can't find any documentation or solution in the internet.
Validation error
Failed to create Cost Category: Effective start can only be first day of a month at 00:00:00 UTC
Thanks!
I think it's a bug in AWS Console. because I checked from json and found that it sends incorrect "EffectiveStart" data.
{"RuleVersion":"CostCategoryExpression.v1","Rules":[{"Type":"REGULAR","Value":"Dev","Rule":{"Tags":{"Key":"Application","Values":["Dev"],"MatchOptions":["EQUALS"]}}}],"EffectiveStart":"2022-07-31T00:00:00Z","Name":"Dev"}

C++ error: decomposition declaration not permitted in this context [closed]

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Why is g++ giving an error like this?
blahblah.h:80:10: error: decomposition declaration not permitted in this context
float[NUM_OUTPUTS] output_buffer;
(Already solved, but creating this because there's no good google hits for this error text, and the error message is inscrutable.)
In C++ declarations, the array size goes after the variable name, not after the type:
float output_buffer[NUM_OUTPUTS];

why does a simple cast from int to double not work [closed]

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i have a simple function, in which i need to divide two integers. But the casting does not work.
I can't understand what is wrong in my code:
double new=0.0;
if(N>0) new = double(Ns)/double(N);
The error-message at the place double new; is (error:expected unqualified-id) and at the place new=double(Ns)/double(N)
and at
new is a reserved keyword in C++. Pick another name for your variable:
double double_new=0.0;
if(N>0) double_new = double(Ns)/double(N);
new is a reserved keyword in C++. You cannot have objects named new.

Why does django object.get raise DoesNotExist when it does? [closed]

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Closed 8 years ago.
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I have got this strange exception : the object exists in my database, get doesn't work but filter does...
(Pdb) p ProjectPhase.objects.get(slug='done-complete')
*** DoesNotExist: DoesNotExist('ProjectPhase matching query does not exist.',)
(Pdb) p ProjectPhase.objects.all().filter(slug='done-completed')
[<ProjectPhase: 8 - Done - Completed>]
Any hint ?
Both texts are different. First one is: done-complete and second one done-completed.
So,
ProjectPhase.objects.get(slug='done-completed')
Should work