I am referring to the errors I get when I press Ctrl + Shift + J on my site. I receive the following:

When I click on Messenger icon in either Firefox or Edge, the screen loads the page with only the header. The rest of the browser window is blank only displaying the template background color.

NS_ERROR_FILE_INVALID_PATH: Component returned failure code: 0x80520009 (NS_ERROR_FILE_INVALID_PATH) [nsIFileURL.file]

   resolveURIInternal resource:///modules/BrowserContentHandler.sys.mjs:75

   handleNotification resource:///modules/BrowserContentHandler.sys.mjs:1090

BrowserContentHandler.sys.mjs:79:13