porcupaleric

so i added some mods and i couldnt join the MP server anymore. when i try to join it says "java.lang.nullpointerexception: cannot invoke "net.minecraft.resources.ResourceLocation.toString()" beacause "book" is null." i tried fixing it on my own beforehand but i dont have the server log for that time. the error was surrounding the mod mysticalAgriculture and patchouli books or something along those lines, i removed the mod but still receive the error. help is appreciated the server error log: https://mclo.gs/MfRlzDL