Codecov unable to process

I run a codecov and it says that There was an error processing coverage reports.. What could be the issue? it comes from the below link

@liaogz82, I’m not sure why, but I’m seeing reports as expired. Could you try adding

  max_report_age: off

to a .codecov.yml file?

it now throws an error 500

@liaogz82, the max_report_age has to go under a codecov heading as in the example above, not as a root element.