unknown internal error while adding new row in mysql

got an error while performing db row add. turning on the debug function doesnt work in phpmaker. but if i make update or delete request to db it works without errors. plz help me
i use mysql db, windows 10
Error
An internal error has occurred while processing your request.

Please enable debug and also check HTTP response to investigate the cause of error.

already enabled. but still no additional error data. and why it says “generate config.php”?

Because after you enable the debug mode from Tools → Advanced Settings of your PHPMaker project, you have to re-generate the config.php file to apply the changes you did from the project side into your generated web application.