Can anyone help me? I add kotlin worksheets to my android project and put them under the test folder. But suddenly i’ve got an error while gradle run testDebugUnitTest task.

What do you mean by worksheet? I guess the file should have the .kt extension, not .kts

.ws.kts files

Oh, never heard of those. There are similar issues reported in YouTrack, maybe have a look: https://youtrack.jetbrains.com/