Most, if not all of the errors raised CAN be fixed by users directly by making appropriate edits. We've pulled out a few commonly raised issues below.
robot.txt is not valid
Document does not have a valid rel=canonical
The url: field is usually on line 2 of config.yml file. Make sure that you've inserted your website's URL.
Here's a list of issues that are pending Isomer team to resolve. Please ignore these errors, and if you have other errors fixed, you can still hit the target score of 90.
The team will work on fixing these issues and will provide an update once it's fixed.