Need help with Laravel-Lumen

I'm using laravel/lumen-framework: 10.0 with php-8.1, the below warning is getting appended with the JSON response. There is no stack trace. APP_DEBUG is set to true , the below warning is not getting logged either.

Warning: Array to string conversion in /applications/builds/cbs/vendor/laravel/lumen-framework/src/Concerns/RegistersExceptionHandlers.php on line 125Warning: Array to string conversion in /applications/builds/cbs/vendor/laravel/lumen-framework/src/Concerns/RegistersExceptionHandlers.php on line 125{"data": {"service_status_code": 200,"response": {