Drupal 8.x

I'm getting hit with this error each time I delete a field.

Greetings everyone. I'm having a hard time finding the right selector (element class name) so I can properly target it in css.

I'm using a module called field formatter  class which made it better! Still, it is not enough because some times one has to target the parent div to change any aspects of it (for instance width so that there more available space in a row for other elements to follow).

The way I'm doing is by inspecting the html code and then searching for the right element.

I have github and localhost setup for my localhost Drupal 8 build.I'm git pushing to github when I make changes to my localhost build:

git push origin master

This is working correctly without errors, and I can see the updated content on my github repository when I login to github.com and view my repo.

I have already setup my cPanel server to connect to the github repository and it was working and had the base Drupal install running.

But now when I login to my cpanel via my Terminal CLI using SSH, it allows me to :

I have a site in development on a MAMP Environment. All is going well, except, as is part of development, I am regularly clearing the cache to view updates. I am using the Admin Toolbar module, so I just click the Drop, and then the "Flush all caches" selection. It takes at least 3-4 minutes each time to clear the caches and return to where it is ready for the next instruction.

This brings up questions:

1) Should it take this long?  

I'm new to Drupal. I would like to know how to do a minor update from Drupal 8.4.8 to Drupal 8.6.14.  I am running Drupal on my GoDaddy shared hosting service.  This Drupal site is just for learning.  The reason I need to update it is I installed some modules that look to be incompatible with a Drupal version under 8.5

Greetings,

I have a backup of a site that works fine in production, and would like to restore it in a fresh installation (dev env) then access it and modify some stuff before deploying to production. However, when I restore the DB backup, it results in an infinite loop redirecting me to the login page.

So questions are:

1. What is the best way to restore a drupal.sql backup file in a new installation?

2. How to troubleshoot this redirect?  Are there logs, config, or settings to investigate?

Thank you 

Masoud