Fatal error: Uncaught TypeError: Unsupported operand types: null | string in /in/4Wrha:7
Stack trace:
#0 {main}
thrown in /in/4Wrha on line 7
Process exited with code 255.
Warning: A non-numeric value encountered in /in/4Wrha on line 7
Warning: A non-numeric value encountered in /in/4Wrha on line 7
Warning: A non-numeric value encountered in /in/4Wrha on line 7
0