max_input_vars too small

Hello,

Two days ago I had a trouble when a user wanted to save its imputations. The log message was the following:2025-03-20 08:20:24.673 ===== TRACE ===== WARNING - Left work not retrieved from screen
2025-03-20 08:20:24.674 ===== TRACE ===== - Maybe max_input_vars is too small in php.ini (actual value is 5000)
2025-03-20 08:20:24.674 ***** ERROR ***** [V11.2.2] ERROR *****
2025-03-20 08:20:24.674 ***** ERROR ***** [V11.2.2] on file '/var/www/html/projeqtor/tool/saveImputation.php' at line (40)
2025-03-20 08:20:24.674 ***** ERROR ***** [V11.2.2] cause = Error - Maybe max_input_vars is too small in php.iniI checked in the forum about this error and found few topics about this error. In those topics, a value of 4000/5000 for the max_inputs_vars is mentionned.
So, we increased the this value to 5000 in our php.ini file (the previous value was 4000).

To day I have another user who reports the same trouble and the log presents the same message.
I suppose I have to increase another time this variable ? What could be a "correct" value (6000 or 10000) ? Is this variable in touch with the number of connected users, or/and the number of projects or activities in the database ?

Best regards.
Paul-Henri