Thanks for sending this over. If this is only happening when you're logging in then it's almost certainly down to one of your security plugins - I appreciate that you've deactivated these, but it's possible that there's still some residual code left in there. Jetpack also has some security features which may well be causing an issue.
Wordfence actually has a feature you can enable to make Ezoic compatible with it - search for Ezoic on this page : https://www.wordfence.com/help/dashboard/options/
What I'd recommend doing is reactivating it and following those instructions, or if you'd prefer not to, make sure that it's completely uninstalled from your wordpress, not just deactivated.
From what I can see 10X Booster is a speed / caching plugin - With this, just to ensure that your issue doesn't get cached, I'd recommend reinstalling, and then making sure any caching features are turned off completely.
Finally with Jetpack, please check to make sure you don't have any security/firewall settings on.
Once you've done that please let me know and we can take another look at things.