I read the logs of Plex Media Scanner, there were many errors here:
Nov 21, 2020 11:58:21.640 [32425] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Nov 21, 2020 11:58:21.641 [32425] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1401) (tries=1): Cannot begin transaction. attempt to write a readonly database
Nov 21, 2020 11:58:22.532 [32425] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Nov 21, 2020 11:58:22.532 [32425] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1401) (tries=2): Cannot begin transaction. attempt to write a readonly database
Nov 21, 2020 11:58:23.314 [32425] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Nov 21, 2020 11:58:23.314 [32425] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1401) (tries=3): Cannot begin transaction. attempt to write a readonly database
Nov 21, 2020 11:58:23.878 [32425] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Nov 21, 2020 11:58:23.878 [32425] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1401) (tries=4): Cannot begin transaction. attempt to write a readonly database
Nov 21, 2020 11:58:25.007 [32425] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Nov 21, 2020 11:58:25.007 [32425] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1401) (tries=5): Cannot begin transaction. attempt to write a readonly database
Nov 21, 2020 11:58:25.264 [32425] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Nov 21, 2020 11:58:25.264 [32425] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1401) (tries=6): Cannot begin transaction. attempt to write a readonly database
Nov 21, 2020 11:58:25.778 [32425] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Nov 21, 2020 11:58:25.778 [32425] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1401) (tries=7): Cannot begin transaction. attempt to write a readonly database
Nov 21, 2020 11:58:26.806 [32425] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Nov 21, 2020 11:58:26.806 [32425] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1401) (tries=8): Cannot begin transaction. attempt to write a readonly database
Nov 21, 2020 11:58:27.864 [32425] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Nov 21, 2020 11:58:27.864 [32425] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1401) (tries=9): Cannot begin transaction. attempt to write a readonly database
Nov 21, 2020 11:58:28.978 [32425] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Nov 21, 2020 11:58:28.978 [32425] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1401) (tries=10): Cannot begin transaction. attempt to write a readonly database
Nov 21, 2020 11:58:28.978 [32425] ERROR - Exception thrown during analysis: Cannot begin transaction. attempt to write a readonly database
and this:
Dec 09, 2020 03:35:26.828 [15709] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Dec 09, 2020 03:35:26.828 [15709] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1449) (tries=1): Cannot begin transaction. attempt to write a readonly database
Dec 09, 2020 03:35:27.907 [15709] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Dec 09, 2020 03:35:27.907 [15709] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1449) (tries=2): Cannot begin transaction. attempt to write a readonly database
Dec 09, 2020 03:35:29.064 [15709] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Dec 09, 2020 03:35:29.064 [15709] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1449) (tries=3): Cannot begin transaction. attempt to write a readonly database
Dec 09, 2020 03:35:29.378 [15709] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Dec 09, 2020 03:35:29.378 [15709] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1449) (tries=4): Cannot begin transaction. attempt to write a readonly database
Dec 09, 2020 03:35:30.007 [15709] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Dec 09, 2020 03:35:30.007 [15709] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1449) (tries=5): Cannot begin transaction. attempt to write a readonly database
Dec 09, 2020 03:35:30.264 [15709] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Dec 09, 2020 03:35:30.264 [15709] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1449) (tries=6): Cannot begin transaction. attempt to write a readonly database
Dec 09, 2020 03:35:30.778 [15709] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Dec 09, 2020 03:35:30.778 [15709] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1449) (tries=7): Cannot begin transaction. attempt to write a readonly database
Dec 09, 2020 03:35:31.807 [15709] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Dec 09, 2020 03:35:31.807 [15709] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1449) (tries=8): Cannot begin transaction. attempt to write a readonly database
Dec 09, 2020 03:35:32.864 [15709] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Dec 09, 2020 03:35:32.864 [15709] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1449) (tries=9): Cannot begin transaction. attempt to write a readonly database
Dec 09, 2020 03:35:33.978 [15709] ERROR - SQLITE3:0x7fffffff, 8, statement aborts at 1: [BEGIN IMMEDIATE] attempt to write a readonly database
Dec 09, 2020 03:35:33.978 [15709] ERROR - Failed to begin transaction (../Library/MediaItem.cpp:1449) (tries=10): Cannot begin transaction. attempt to write a readonly database
Dec 09, 2020 03:35:33.978 [15709] ERROR - Exception thrown during analysis: Cannot begin transaction. attempt to write a readonly database
Maybe that’s the direction to solve the issue. But I didn’t change any setting of my FreeNAS or Shield TV‘s Plex Media Server, that’s really wired.