The error is providing you with helpful info: you do indeed have a duplicate entry in your fstab. See the two lines that both contain the text starting with “1db4c090…” Both of those lines are trying to mount to the same location.
You should be able to comment one of them out using a "# " at the start of the line. Normally I would then reboot or you could try “sudo mount -a” on the command line.