System.Private.CoreLib: Result: Failure Value cannot be null. (Parameter 'value')

`System.Private.CoreLib: Result: Failure
Exception: Value cannot be null. (Parameter 'value')`

above error is thrown in local-dev runtime environment when calling the HttpTrigger with POST and JSON-format payload on a PowerShell AzFunctionApp-v3
NB: error is thrown before any code is executed
for validation i left in my run.ps1 just the following lines (commenting all the rest) and error was still thrown:
```
using namespace System.Net
param($Request, $TriggerMetadata)
```

azure-functions-core-tools installation:
`npm i -g azure-functions-core-tools@3 --unsafe-perm true`
which translated to version `3.0.2534`

**fix = downgrade to 3.0.2245:**
`npm i -g azure-functions-core-tools@3.0.2245 --unsafe-perm true`

### configuration files + other environment tools & versions

function.json
```
{
"bindings": [
{
"authLevel": "anonymous",
"type": "httpTrigger",
"direction": "in",
"name": "Request",
"methods": [
"get",
"post"
]
},
{
"type": "http",
"direction": "out",
"name": "Response"
}
]
}

```

.vscode/settings.json
```
{
"azureFunctions.deploySubpath": ".",
"azureFunctions.projectLanguage": "PowerShell",
"azureFunctions.projectRuntime": "~3",
"azureFunctions.showExplorer": true,
"azureFunctions.stopFuncTaskPostDebug": false,
"azureFunctions.validateFuncCoreTools": true,
"debug.internalConsoleOptions": "openOnSessionStart",
"debug.allowBreakpointsEverywhere": true,
"debug.extensionHost.useV3": true,
"powershell.powerShellDefaultVersion": "~7",
"terminal.integrated.shell.windows": "C:\\Program Files\\PowerShell\\7\\pwsh.exe"
}
```

host.json
```
{
"version": "2.0",
"extensionBundle": {
"id": "Microsoft.Azure.Functions.ExtensionBundle",
"version": "[1.*, 2.0.0)"
},
"managedDependency": {
"enabled": true
},
"extensions": {
"http": {
"routePrefix": ""
}
}
}
```

VSCode 1.46.0
MS PowerShell VSCode Extension v2020.6.0
`=====> PowerShell Integrated Console v2020.6.0 <=====`

```
PSVersion 7.0.2
PSEdition Core
```

Reproduce the failure in a PowerShell HTTP-trigger project with Azure Functions Core Tools 3.0.2534, using the supplied function.json, host.json, and minimal run.ps1. Compare the behavior with version 3.0.2245, then trace the local invocation path to identify the regression. Done means the POST request runs without the null-value failure, or the affected version and workaround are documented.

Written by the indexing model from the issue text.