Sudoku MOD for phpbb3

[xpmen]

ello el_teniente and happy new year 2023



my site is now with php 8

at the start I had some bug, but they have been fixed, but there remains 1 that I can't find a solution

when the sudoku grid is finished I don't have a new grid that is displayed, I stay on the finished grid.

do you have an idea on which part of the code and which file I can modify?



thank you