[Day 10: Test coverage] The test "File data added" failed

Hi guys, I try to submit the solution of Day 10. But the test “File data added” failed. An assertionError shows me that check test: expected ‘//Test to check if the response data …’ to include ‘Response has data value’,

but when checking the body response, it contains “Response has a data value”.

So I’m very confused that where was I wrong? Kindly help me check this issue. Thanks guys!

“Response has a data value” vs “Response has a data value”.