Volley, set score and ballpoints aren't saved (no errors displayed)

Hello,
I’ve a problem with the volley league. I’ve already created and updated standings and matches results for a basket league without any issue but when I try to do the same for a team in the volley league nothing happened, the page just reload telling me that the standing has been updated but the score fields under set and ballpoints are empty.
I’ve just tried to create another volley league but I’ve the same problem. I think it’s a problem with the volley php file but I don’t know what to do to solve it.
Can you help me with it?

Thanks in advance

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