Users have been receiving a component error, however as System Admin role I don't run into this error. Any ideas on how I can fix this error for other users?

A component error has occured: Invalid definition for null:Proposal_Request_Distribution__mdt[]: Access to entity 'Proposal_Request_Distribution__mdt'denied

Any help would be much appreciated!

Hi All,

This is my first time posting in this forum. I have already called Salesforce Support and they directed me here.

Background:

• I deleted a custom field, which I had no idea was connected to a Lightning Component Opportunity Form. When the custom filed got deleted, it automatically disappeared the Lightning Component Opportunity Form. 
• I was able to "undelete" the custom field, but the Lightning Component Opportunity Form was still not appearing. 
• Salesforce noted since the Lightning Component Opportunity Form that holds all the code they are unable to assist since I am Standard Support.

Question:

• If the console developer shows an "error message" in the code is that where the "undeleted" custom field should be inserted to make the form appear again?
• Do I need to know code to fix this issue?

Thank you,
Angela