Plugin gallery not loading

hello everyone
First apologies because my english is not very good.
I’m having a problem with the plugin gallery, when I enter the only thing I get is a spinning wheel
I know there are other topics about the same problem, but I don’t see a solution that has worked for me.

Some clarifications:

Im working with apache and php 7.4 on Linux Ubuntu server 22.04
I have access to administrator privileges
my web server has write permissions to the OJS directory

The route is
Journals/settings wizard/plugin/plugin gallery

And then only keeps loading

Here is the line on the Apache log

PHP Notice: Undefined index: certification in /var/www/html/ojs/lib/pkp/classes/plugins/ on line 194,
referer: https://(mydomain)/index.php/index/admin/wizard/2

thanks for the help