The alchemist guide book is not being correctly loaded.
Using v1.10.0.
This was taken from the logs during game initialization:

[12:25:13] [Render thread/ERROR]: Failed to load book extraalchemy:alchemist_guide defined by mod extraalchemy, skipping
java.lang.IllegalArgumentException: Book extraalchemy:alchemist_guide has use_resource_pack set to false. This behaviour was removed in 1.20. The book author should enable this flag and move all book contents clientside to /assets/, leaving the book.json in /data/. See https://vazkiimods.github.io/Patchouli/docs/upgrading/upgrade-guide-120 for details.
at vazkii.patchouli.common.book.Book.(Book.java:145) ~[Patchouli-1.20.1-84-FABRIC.jar:?]
at vazkii.patchouli.common.book.BookRegistry.loadBook(BookRegistry.java:90) ~[Patchouli-1.20.1-84-FABRIC.jar:?]
at vazkii.patchouli.common.book.BookRegistry.lambda$init$3(BookRegistry.java:75) ~[Patchouli-1.20.1-84-FABRIC.jar:?]
at java.util.HashMap.forEach(HashMap.java:1430) ~[?:?]
at vazkii.patchouli.common.book.BookRegistry.init(BookRegistry.java:70) ~[Patchouli-1.20.1-84-FABRIC.jar:?]
at vazkii.patchouli.fabric.common.FabricModInitializer.onInitialize(FabricModInitializer.java:33) ~[Patchouli-1.20.1-84-FABRIC.jar:?]
at net.fabricmc.loader.impl.FabricLoaderImpl.invokeEntrypoints(FabricLoaderImpl.java:399) ~[fabric-loader-0.16.10.jar:?]
at net.fabricmc.loader.impl.game.minecraft.Hooks.startClient(Hooks.java:52) ~[fabric-loader-0.16.10.jar:?]
at net.minecraft.class_310.(class_310.java:458) ~[client-intermediary.jar:?]
at net.minecraft.client.main.Main.main(Main.java:211) ~[minecraft-1.20.1-client.jar:?]
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:480) ~[fabric-loader-0.16.10.jar:?]
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) ~[fabric-loader-0.16.10.jar:?]
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) ~[fabric-loader-0.16.10.jar:?]
at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[?:?]
at java.lang.reflect.Method.invoke(Method.java:580) ~[?:?]
at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:243) ~[NewLaunch.jar:?]
at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:278) ~[NewLaunch.jar:?]
at org.multimc.EntryPoint.listen(EntryPoint.java:143) ~[NewLaunch.jar:?]
at org.multimc.EntryPoint.main(EntryPoint.java:34) ~[NewLaunch.jar:?]