To get rid of the warnings: TV info banner constantly appears on -ng release - #6 by vpeter
But the actual error is this
rsync: [generator] mknod "/media/CE_STORAGE/coreelec_storage/.kodi/userdata/addon_data/service.system.docker/docker/overlay2/49e9d12277429626060d948fad1c0b312a86b96b2d0ebee1738f09d2063c143e/diff/run/s6-rc:s6-rc-init:nFHiKA/servicedirs/s6rc-oneshot-runner/s" failed: File name too long (36)
Not sure yet why it happens.