I don't like or use Bing services but when you get as big and complex as Bing, nothing is easy, it's not like you can open your text editor, modify one line, commit and push.

There so many other variables to take into consideration, by hurrying to fix, you could face all sort of vulnerabilities / other issues.

I'm not saying this error is acceptable, I'm saying it's ridiculous to say it's and easy fix without actually knowing anything, it might or it might now.