Cannot Edit Module within Layout due to error

Question:

When I attempt to edit a Module within a Layout, I receive an error "Cannot edit this module. It is invalid!"

https://zetaglobal.atlassian.net/wiki/download/attachments/569215641/6786418ee1721.editModule.png?version=1&modificationDate=1736851855060&cacheVersion=1&api=v2

Answer: 

The error indicates that when the Module was created it contained invalid HTML, possibly missing required 

 tags.  To resolve this issue, please contact your Account Manager to correct or replace the module with the correct HTML code.