Best posts made by ApTix

So I'm in the trying to make a backup of my old bed mesh to reference. The issue I'm having isnt with the function but it spits out error code when doing it.
Like it does rename the file heightmap_00 to .bak, but it spits out the error code underneath. Am I doing something wrong?
Tried using the command in the console and in a macro but same result. It renames the file but spits out the same error code

Using this command:
M471 S"/sys/heightmap_00.csv" T"/sys/heightmap_00.csv.bak" D1

Error code:
M471 S"/sys/heightmap_00.csv" T"/sys/heightmap_00.csv.bak" D1
Error: M471: Failed to rename file or directory /sys/heightmap_00.csv to /sys/heightmap_00.csv.bak: Unable to find the specified file.

Using duetweb on a raspberry 4 8gb
Board: Duet 3 6HC
DSF 3.4.3

@Phaedrux its running mjpg-streamer beside the duet application for a camera stream. maybe updating would help...but it seems more like a bug than permission issues since it does change the name of the file? like it does work but error codes pops out?