add

src/main/java/com/github/tartaricacid/i18nupdatemod/mixin/MixinBookContents.java

@@ -0,0 +1,29 @@
+package com.github.tartaricacid.i18nupdatemod.mixin;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import com.github.tartaricacid.i18nupdatemod.I18nUpdateMod;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.util.ResourceLocation;
+import vazkii.patchouli.client.book.BookContents;
+
+
+
+@Mixin(BookContents.class)
+public class MixinBookContents {
+    @Inject(at = @At("HEAD"), method = "loadJson", cancellable = true, remap = false)
+    private void loadJson(ResourceLocation resloc, ResourceLocation fallback,  CallbackInfoReturnable<InputStream> callback) {
+        I18nUpdateMod.LOGGER.debug("loading json from {}.",resloc);
+        try {
+            callback.setReturnValue(Minecraft.getInstance().getResourceManager().getResource(resloc).getInputStream());
+        } catch (IOException e) {
+            //no-op
+        }
+    }
+}