BLACK INK IS NOT PRINTING

Check the damper and see if there is ink it in. There might be an air leak. If there isn't any ink in the damper, or the plastic on the damper looks puffy then replace it. There is a rubber washer in those that fail sometimes as well.

Question edited for clarity, full 'maker model (what it is)'.
Question moved to the only Roland Printer category.

Try a Head Soak. Make sure the tube to the waste ink bottle is not blocked or pinched.

https://www.google.com/search?q=versacamm+vp540%2C+coverig+image+in+black+ink

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Question edited for FULL 'make model (what it is)'.
Question moved from Computers to correct category.
"DATA ERROR CANCELING..." Output was stopped because a problem was found in the data received.
Operation cannot be continued. Check whether or not there is an error in the data. Check for a problem with the connector cable or the computer, and redo the operation from setting up the object to be printed on.Roland Technical Support.

VersaCAMM VP-540 54" Eco-Solvent Inkjet Printer/Cutter

https://www.rolanddga.com > products > print-printcut
VersaCAMM VP-540 54" Eco-Solvent Inkjet Printer/Cutter technical support page such as support articles, support guides, software updates, firmware, ...

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Try running cleaning cycle multiple times. Sounds like ink tubes may be clogged.

Could you try
(1) Temporarily stick a white strip over the sensor where it detects the media or
(2) On the length of the media or
(3) Even staple same sized white media below the black one which you can un-staple after printing.
kindly ignore if these are (s) tupid answers

Just one Question?
Do you have your LAN Cable tied with your AC power Cable?
I have th same problem on two VP540 after seven years of trouble free working. A few months ago I was reorganizing my shop and I tied up both cables to avoid tangle cables with machine wheels every time I move It.
I think that the noise produced by AC Voltage Affect the VP540 ethernet port.

Hi Carl Montero,
Your issue may be attributed to two possible points of failure. 1.) The Nozzle is clogged, 2.) the ink is already dry inside. You can try to clean the nozzle by doing the following steps. If it does not work, try to replace the cartridge with a new one.
FINE Cartridge Cleaning
1 Press [Menu] repeatedly until appears. 2 Use [ ] or [ ] to select . 3 Press [OK]. 1 Press [Maintenance] repeatedly until appears. 2 Press [Black] or [Color].
FINE Cartridge Deep Cleaning
1 Press [Menu] repeatedly until appears. 2 Use [ ] or [ ] to select . 3 Press [OK]. 1 Press [Maintenance] repeatedly until appears. 2 Press [Black] or [Color].
Note If deep FINE Cartridge cleaning does not improve the print quality, contact a Canon service representative.

The black cartridge needs replacing it sounds like. On many printers, that is the only way that you get black.

Change the black ink cartridge.