Profile: michaelR-12

Problem:

I am trying to: The site had a "503", I granted more space, the site appeared to show up (I did not test), then after a short while I got "500" error and error-log showed that a folder "autoloader" under "....plugins/types/vendor/toolset" is totally missing leading to a fatal php error.

Now, how to re-upload it? Which plugin to deactivate from the file level, so I can login? Which toolset plugins to re-install?

Solution:

According to the debug logs you mentioned above:
500" error and error-log showed that a folder "autoloader" under "....plugins/types/vendor/toolset" is totally missing leading to a fatal php error.

It is from the Types plugin, I suggest you check these:
1) Make sure you are using the latest version of Toolset plugins, you can download them here:
https://toolset.com/account/downloads/
2) re-install the Types plugin, you can follow our document to install Types plugin manually:
https://toolset.com/faq/how-to-install-and-register-toolset/#manual-installation-if-you-dont-have-types-plugin

Relevant Documentation:

https://toolset.com/faq/how-to-install-and-register-toolset/#manual-installation-if-you-dont-have-types-plugin