Debug FunctionApp .NET8 - An error occurred while running CoreToolsHost.System.Text.Json.JsonReaderException
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Description
Function App name:
Tools used: 4.9.0 version of core tools
New V4 app or existing V3 app migrated to V4:
Creating the bug on behalf of the VS customer: https://developercommunity.visualstudio.com/t/VS2022-ver17114---Debug-FunctionApp-/10757229.
Callstack is available in the screenshot:

Contributor guide
No contributing guide indexed for this repository
Research direction
Start with the linked Visual Studio customer report and the callstack screenshot; the issue names Azure Functions Core Tools 4.9.0 and a .NET 8 debug failure but no source files or tests. Reproduce debugging the Function App and use the JsonReaderException callstack to identify the failing component; done means the app debugs without this error.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- azure
- Domain
- backend, cloud, devtools
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100