I tried to fix it, and it seems there is a problem with the plugins folder, so the plugin menu doesn't load properly. So I deleted the plugins folder and generated it from the default OJS that I had downloaded. I don't know if this is the right way, but it fixed my problem.
0
Safejack
On
so what i found is that a single plugin is the cause you need to remove it then upload.
on ubuntu you can check your logs to see which one
I tried to fix it, and it seems there is a problem with the plugins folder, so the plugin menu doesn't load properly. So I deleted the plugins folder and generated it from the default OJS that I had downloaded. I don't know if this is the right way, but it fixed my problem.