Comments not working on Vtiger CRM 7.4.0

I can´t add comments on accounts, contacts, etc. on a Vtiger 7.4 Installation, could anybody help me on this?

Comments are not saving for me as well. I recently updated to v7.5 all the way from v6.5 on a BlueHost VPS apache server. Was first on php 7.4 then changed to php 8.0, no difference. Also noticed calendar events created from contacts in v6.5 are showing and can click to and get to contact but when dragging the event to another date, it shows it moves the date but refreshing the screen show it did not save the move. I can add/delete contacts, comments are not saved on new contacts either.

SELECT @;

ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_...

I ran SET sql_mode='NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';
MySQL said:
#1231 - Variable 'sql_mode' can't be set to the value of 'NO_AUTO_CREATE_USER'

any help would be appreciated.