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.
If the image is showing just the triangle: https://ibb.co/ZmBPX8B
Hello @letssewllc
Run the below commands in sequence-
cd <your Magento install dir> php bin/magento se:up php bin/magento s:d:c php bin/magento s:s:d -f php bin/magento c:f php bin/magento cache:clean // 644 permission for files find . -type f -exec chmod 644 {} \; // 755 permission for directory find . -type d -exec chmod 755 {} \; chmod 644 ./app/etc/*.xml chown -R :<web server group> . chmod u+x bin/magento