Rae from Shopify here.
Thanks for posting about the error you're receiving, and welcome to the Shopify Community! I'm happy to help look into this further.
Can you please reply to me here with a screenshot of this error message? I recommend ensuring any sensitive details about your store, or Shopify account, are blocked out of the screenshot before sharing it here. Once I receive this, I can take a closer look into what may be causing this to appear.
In the meantime though, some additional troubleshooting steps I suggest taking to resolve this are:
Please keep me posted on how this goes! I look forward to receiving a screenshot of this error, and providing more assistance.