Azure / Azure/Azure-Functions

Debug FunctionApp .NET8 - An error occurred while running CoreToolsHost.System.Text.Json.JsonReaderException

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v4-bug
Dominant language
PowerShell
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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:
![image](https://github.com/user-attachments/assets/167f8c7c-afe1-4576-94d7-5900087efb6c)

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

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