Prompt execution failed SyntaxError: Unexpected non-whitespace character

### Custom Node Testing

- [x] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Your question

help please keep getting this issue with all workflows , used to work fine before comfy update
Prompt execution failed
SyntaxError: Unexpected non-whitespace character after JSON at position 4 (line 1 column 5)

### Logs

```powershell

```

### Other

_No response_