Viewer FILE_MISSING cypress.json

After I upgraded my test instance to 16.0.4 RC1, I got this error:

Technical information

The following list covers which files have failed the integrity check. Please read
the previous linked documentation to learn more about the errors and how to fix
them.

Results

  • viewer
    • FILE_MISSING
      • cypress.json

Raw output

Array
(
[viewer] => Array
(
[FILE_MISSING] => Array
(
[cypress.json] => Array
(
[expected] => bf773ddaccd4c55ed0653dfe26d462c7b459c894a21537dcbc153f02d676b0d894720354d842190ec2c4b9421b1cbfd1b772407c1c784577caf85abe556ecb54
[current] =>
)

            )

    )

)

What might be missing?

Covered by this bug report: