Fstab doesn't mount with exec
Solution 1:
Change that line to
UUID=41dec246-654d-4e35-9d4e-68150e40c5b0 /mnt/Data ext4 rw,suid,dev,auto,user,async,exec 0 2
The position of exec is important, since user also applies noexec. By putting exec after user, you ensure that exec is set. The most important options should be listed last.