Printing stops, throws a "SerialException" error

Dear Colleagues! Please help me find the reason for stopping printing. The printer has recently started to stop at the beginning or in the middle of the print cycle. It's a shame, spent plastic. In this case, Octoprint produces the following message:

"Offline (Error: SerialException: 'device reports readiness to read but returned no data (device disconnected or multiple access on port?)' @ "

Prusa i4, 2019-09-26-octopi-buster-lite-0.17.0

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Thank you so much! It seems the search helped, find this article:

I probably have one of
these problems.

As @b-morgan said: