Fatal error: Uncaught TypeError: array_udiff(): Argument #2 must be a valid callback, array callback must have exactly two members in /in/th1oN:7
Stack trace:
#0 /in/th1oN(7): array_udiff(Array, Array)
#1 {main}
thrown in /in/th1oN on line 7
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Fatal error: Uncaught TypeError: array_udiff(): Argument #2 must be a valid callback, array must have exactly two members in /in/th1oN:7
Stack trace:
#0 /in/th1oN(7): array_udiff(Array, Array)
#1 {main}
thrown in /in/th1oN on line 7
Process exited with code 255.