Thx for the quick response. Right now i try to set up a custom sql query for the cimy datatables. Maybe i’ll figure it out.
I solved my problem. I looked into my database structures. The table wp_options was filled with too many transient records. It was fully bloated. I manually removed transient records over sql and then the upgrade worked. For this problem i recommend this plugin: “Artiss Transient Cleaner”.
Hey shewel, ive got the same problem. Did you find a solution yet?