Several issues after restoring database

I had to restore the database with my latest backup. Since then, I’m having several issues with my site

White page of death when trying to go to https://www.site.com/wp-admin. But I can login through https://www.site.com/wp-login.php with no problem

I can’t add images to post, as the images won’t load. After opening the image selector nothing appears. If I go to media all the files are there

I tried to use the plugin regenerate thumbnails to reload the images, but keeps throwing this error: The resize request was abnormally terminated (ID 6001). This is likely due to the image exceeding available memory or some other type of fatal error.

After doing some things on the control panel and clicking submit, it records whatever is entered, but you end up in a white page. If you click back the action did come through. For example, if I disable and enable a plugin, I get to a white page. The plugin is enabled, but I have to go to the address bar over and over again.

As I said, all of this is happening after restoring the SQL database. I have changed theme, disabled all plugins, reinstalled WP4.4

Is there any option to rebuild database or rebuild the install in whatever form that I did not find?

Thanks