Demolished the program and deleted the working directory with libraries. It worked )))
well I’m glad, sometimes just removing the xod folder inside lib several problems are solved
Nice to hear that everything fixed 
I think that the corrupted library xod-dev/ws2812 was in your workspace (probably, because you saved something while the library opened corrupted). And the cleaning of the workspace helped.
But I can’t get out how it was became corrupted. 
If someone has any ideas or can reproduce the bug (without a copy in the workspace) — please, mention me and describe the steps to reproduce. Thanks!