I have been seeing this error from the Fix Common Problems Plugin and I am following its orders. Can someone point me in the right direction? 

bigbeast-diagnostics-20180507-1517.zip

Related to this unassigned disk dropping offline:

 

May  4 09:27:41 BigBeast unassigned.devices: Disk with serial 'LCS-128M6S_0000000000030592', mountpoint 'New_Volume' is not set as sharable and will not be shared...
May  4 09:27:41 BigBeast unassigned.devices: Device '/dev/sdj1' script file not found.  'ADD' script not executed.
May  4 09:29:45 BigBeast unassigned.devices: Device '/dev/sdj1' script file not found.  'REMOVE' script not executed.
May  4 09:29:45 BigBeast unassigned.devices: Unmounting disk 'New Volume'...
May  4 09:29:45 BigBeast unassigned.devices: Unmounting '/dev/sdj1'...
May  4 09:29:45 BigBeast unassigned.devices: Unmount of '/dev/sdj1' failed. Error message:  umount: /mnt/disks/New_Volume: target is busy.
May  4 09:29:46 BigBeast unassigned.devices: Disk 'New Volume' could not be unmounted...
May  4 09:29:50 BigBeast kernel: xhci_hcd 0000:09:00.0: Cannot set link state.
May  4 09:29:50 BigBeast kernel: usb usb4-port1: cannot disable (err = -32)
May  4 09:29:50 BigBeast kernel: usb 4-1: USB disconnect, device number 2
May  4 09:29:50 BigBeast kernel: sd 16:0:0:0: [sdj] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x01 driverbyte=0x00
May  4 09:29:50 BigBeast kernel: sd 16:0:0:0: [sdj] tag#0 CDB: opcode=0x2a 2a 00 00 60 08 c0 00 00 08 00
May  4 09:29:50 BigBeast kernel: print_req_error: I/O error, dev sdj, sector 6293696
May  4 09:29:50 BigBeast kernel: Buffer I/O error on dev sdj1, logical block 786456, lost async page write
May  4 09:29:50 BigBeast kernel: sd 16:0:0:0: [sdj] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x01 driverbyte=0x00
May  4 09:29:50 BigBeast kernel: sd 16:0:0:0: [sdj] tag#0 CDB: opcode=0x2a 2a 00 02 a4 4b 60 00 08 00 00
May  4 09:29:50 BigBeast kernel: print_req_error: I/O error, dev sdj, sector 44321632
May  4 09:29:50 BigBeast kernel: Buffer I/O error on dev sdj1, logical block 5539948, lost async page write
May  4 09:29:50 BigBeast kernel: Buffer I/O error on dev sdj1, logical block 5539949, lost async page write
May  4 09:29:50 BigBeast kernel: Buffer I/O error on dev sdj1, logical block 5539950, lost async page write
May  4 09:29:50 BigBeast kernel: Buffer I/O error on dev sdj1, logical block 5539951, lost async page write