Problem Description :
Error as below occurs when trying to open markups on a file in BravaIssue with Brava is existing, able to create the markup but error occurs while opening the saved markups.
Problem Solution :
This issue could be resolved by Editing IIS settings from Internet Information Services (IIS) Manager
Point to correct server and Edit Request Filtering settings as below screenshot -
Allow unlisted files name extensions , unlisted verbs, high-bit characters and increase content length limit.