Fatal error: Uncaught TypeError: henk(): Argument #1 ($hans) must be of type string, null given, called in /in/N447V on line 8 and defined in /in/N447V:3
Stack trace:
#0 /in/N447V(8): henk(NULL)
#1 {main}
thrown in /in/N447V on line 3
Process exited with code 255.
Fatal error: Uncaught TypeError: Argument 1 passed to henk() must be of the type string, null given, called in /in/N447V on line 8 and defined in /in/N447V:3
Stack trace:
#0 /in/N447V(8): henk(NULL)
#1 {main}
thrown in /in/N447V on line 3
Process exited with code 255.