I was updating Magento from 2.3.5-p2 to 2.3.6 and when it was done, I got the below screenshot for admin login, and upon logging in the admin didn't look right at all. Was showing just a link tree type thing instead of how it is supposed to look with all the slideout menu options and what not. I was installing it from Installatron through centos like normal (didn't have this issue from 2.3.4 to 2.3.5-p2). I went through the steps found at https://community.magento.com/t5/Installing-Magento-2-x/Admin-Panel-amp-Home-Pages-Not-loading-prope... but no luck. Thankfully I was able to restore a backup with no problem, but I can't update knowing I have that issue.