Question : Deprecated: Assert\that(): Implicitly marking parameter $defaultPropertyPath as nullable is deprecated, the explicit nullable type must be used instead in

And For Solving this issue, follow below steps.

1. Open php.ini file and

2. Add below line error_reporting = E_ALL & ~E_DEPRECATED

3. Restart the apache server on windows.

This will remove all the Deprecated: warning issue with phpmyadmin