sorry change to pos.vapeoi.com same problem

Hello,

Please check server requirements in the documentation.pdf that is included in your download and make suer your server met them, specially MySQL `only_full_group_by` mode should be disabled.

Lastly, please check the server error logs and let me know the error details to that I can suggest.

Thank you

how to disable

Solved change PHP version 7+

I am glad to know. Please google on how to disabled mysql only_full_group_by mode, the first or second result will be this [SO question](https://stackoverflow.com/questions/23921117/disable-only-full-group-by/23921234).