Can't Update wordpress, keep getting blank page

I have deactivated plugins (the ones I can actually see). I can’t seem to search for plugins, install plugins or update anything at all in wordpress. Everything leads to a blank page. The plugins are still working on the site though.

My error log says this when I try to update to a newer wordpress:

WordPress database error Incorrect table definition; there can be only one auto column and it must be defined as a key for query DROP INDEX PRIMARY ON wp_wpr_autoresponders; made by activate_plugins, activate_plugin, do_action, call_user_func_array, wpresponder_install, DatabaseChecker->perform_check,DatabaseChecker->modify_table_to_structure

I have no idea what this means, I am just learning this stuff. Can anyone help?