Hello,

I am using the latest version of K2 2.7.0 in the same server with the same template,
but in two different sites.

In of the them the Journalist usually when trying to edit and change the image of the article
the sites stays loading forever and does not give any error.

Have anyone some suggestions about this issue?!

Can you check the console tab for any JS errors?

Hello,

I solved the issue. Somehow the table engine of k2 was converted in Innodb.
After changing it to MyISAM the backend is working normally.

This may came from using quick start themes. Once I helped someone that K2 tables
were giving a sql error and the issue was the FULLTEXT index
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K2 is fully innoDB compatible, what version are you using?