Check your HDD for errors.
Code
Sep 12 18:54:49.042450 LibreELEC udevil[883]: udevil: error 105: mkdir '/media/Új kötet' failed
Sep 12 18:54:49.057068 LibreELEC udevil[872]: Mounted /dev/nvme0n1p1 at /media/nvme0n1p1-nvme-Patriot_M.2_P30
Sep 12 18:54:49.081919 LibreELEC kernel: ntfs3: nvme0n1p5: It is recommened to use chkdsk.
Sep 12 18:54:49.081963 LibreELEC kernel: ntfs3: nvme0n1p3: It is recommened to use chkdsk.
Sep 12 18:54:49.081992 LibreELEC kernel: ntfs3: nvme0n1p3: volume is dirty and "force" flag is not set!
Sep 12 18:54:49.082020 LibreELEC kernel: ntfs3: nvme0n1p5: volume is dirty and "force" flag is not set!
Sep 12 18:54:49.082102 LibreELEC udevil[1105]: mount: /var/media/Új kötet: wrong fs type, bad option, bad superblock on /dev/nvme0n1p5, missing codepage or helper program, or other error.