Printing stops, throws a "SerialException" error

[kak-dela007]

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?)' @ comm.py:_readline:2793) "

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

[b-morgan]

Need help? Read this first! Remember to provide version numbers, relevant log files and general information about your setup. Problem solved? Mark the solution! WE NEED LOGS TO HELP YOU!

The more information you give us, the better the chances of us helping you.

[kak-dela007]

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

OctoPrint randomly loses connection to the printer with a "SerialException"

A "SerialException" like e.g. device reports readiness to read but returned no data indicates that something a layer beneath OctoPrint broke and the connection to your printer was lost due to that. There's nothing OctoPrint can do about this - as already said the issue happens beneath OctoPrint. It's basically like someone pulled the rug from beneath its feet. The most common reasons for this are: You are running OctoPrint on a Raspberry Pi but have not powered said Pi from a good power suppl…

I probably have one of
these problems.

[Ewald_Ikemann]

As @b-morgan said:

@b-morgan

WE NEED LOGS TO HELP YOU!