Cannot add test case to a test cycle
I have a trouble:
There is an error when adding test case to the cycle in Zephyr. The error says: "An unexpected error has occurred. Please try to reload the screen", but reloading page doesn't help.
When switch to the test player it displays the case with the message: "Start a new test execution", but it doesn't help either.
Trying to run the case separately without test cycle results into the message: "Oops! Something went wrong."
It seems there is some mistake with test data, but I can't figure out what exact this mistake is. I used the similar data on my other cases and it didn't lead to any errors.
What can be wrong with it? Does anyone know?