Can't update plugins from the Dashboard

Hello again heroes!

I'm having an error when I try to update plugins from the Dashboard. This already happened before and I re-installed to solve. Please check the error attached.

Unfortunately, there's a new update and I can't make it from dashboard again.

I'm also getting an error when I try to backup the website from Snapshot when it reach plugins, not sure if it's related. It have the same amount of plugins of a similar site on the same host and I was able to make the backup in the other. (FYI: I'm excluding /uploads folder).

Could you please give me an idea of what to do? Thanks!