This bug has been officially FIXED in 2024.10.09, version 1.5.4241, you no longer need this mod if you are playing newest release.
-------------------------------------------------------------
Fix reading AI error when they try to find a book to read but they don't have reading property.
[b]The error log may show like this:[/b]
Exception in RimWorld.ThinkNode_Priority_GetJoy TryIssueJobPackage: System.NullReferenceException: Object reference not set to an instance of an object
[Ref BB1304B4]
at Verse.BookUtility.IsValidBook (Verse.Thing thing, Verse.Pawn pawn) [0x0001f]
If you encounter error like this, you can try this mod.
* Actually this mod is made for [url=https://steamcommunity.com/sharedfiles/filedetails/?id=815726158] Prisoner Recreation[/url], but it should work when you get error log above.
* Better with [url=https://steamcommunity.com/sharedfiles/filedetails/?id=815726158] Prisoner Recreation[/url].