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<?php function update_hook(): \Stringable|string|null|none { echo "123"; } update_hook();
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.24, 8.3.0 - 8.3.12
123 Fatal error: Uncaught TypeError: update_hook(): Return value must be of type Stringable|none|string|null, none returned in /in/LQPcN:5 Stack trace: #0 /in/LQPcN(6): update_hook() #1 {main} thrown in /in/LQPcN on line 5
Process exited with code 255.

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