Online PHP editor | output for Pqjj6

Output for 8.3.0 - 8.3.19, 8.4.1 - 8.4.5: Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, false given in /in/Pqjj6:5 Stack trace: #0 {main} thrown in /in/Pqjj6 on line 5
Process exited with code 255.
Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.32, 8.2.0 - 8.2.28: Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, bool given in /in/Pqjj6:5 Stack trace: #0 {main} thrown in /in/Pqjj6 on line 5
Process exited with code 255.
Output for 8.0.1 - 8.0.9: Fatal error: Uncaught TypeError: count(): Argument #1 ($var) must be of type Countable|array, bool given in /in/Pqjj6:5 Stack trace: #0 {main} thrown in /in/Pqjj6 on line 5
Process exited with code 255.
Output for 7.4.0 - 7.4.33: Warning: count(): Parameter must be an array or an object that implements Countable in /in/Pqjj6 on line 5 bool(true)