fanotify mark fails

[einalex]

error:

 gosearchServer[62813]: invalid cross-device link
 gosearchServer[62813]: panic: could not call fanotifymark
 gosearchServer[62813]: goroutine 19 [running]:
 gosearchServer[62813]: github.com/ozeidan/gosearch/internal/fanotify.Listen(0xc0000c0180)
 imtrey.lan.4d6.de gosearchServer[62813]:         gosearch/internal/fanotify/fanotify.go:87 +0x33b
 imtrey.lan.4d6.de gosearchServer[62813]: created by main.main
 imtrey.lan.4d6.de gosearchServer[62813]:         gosearch/cmd/server/main.go:28 +0x16b

mounts:

/dev/nvme0n1p2 on / type btrfs (rw,relatime,ssd,space_cache,subvolid=276,subvol=/arch)
/dev/nvme0n1p1 on /boot/efi type vfat (rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro)
/dev/nvme0n1p2 on /home type btrfs (rw,relatime,ssd,space_cache,subvolid=262,subvol=/home)
/dev/sda1 on /home/user/Data type ext4 (rw,nosuid,nodev,relatime,user)
/dev/sdb1 on /home/user/Entertainment type btrfs (rw,relatime,space_cache,subvolid=5,subvol=/)