[15Jun2020 17:10:22.781] [Server thread/ERROR] [net.minecraft.item.crafting.RecipeManager/]: Parsing error loading recipe darkutils:self/slimecrafting/magma/magma_block
com.google.gson.JsonSyntaxException: Invalid or unsupported recipe type 'darkutils:slime_crafting'
at net.minecraft.item.crafting.RecipeManager.lambda$deserializeRecipe$8(RecipeManager.java:133) ~[?:?]
at java.util.Optional.orElseThrow(Optional.java:290) ~[?:1.8.0_252]
at net.minecraft.item.crafting.RecipeManager.func_215377_a(RecipeManager.java:132) ~[?:?]
at net.minecraft.item.crafting.RecipeManager.func_212853_a_(RecipeManager.java:60) ~[?:?]
at net.minecraft.item.crafting.RecipeManager.func_212853_a_(RecipeManager.java:37) ~[?:?]
at net.minecraft.client.resources.ReloadListener.func_215269_a(SourceFile:13) ~[?:?]
at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:670) ~[?:1.8.0_252]
at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646) ~[?:1.8.0_252]
at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:456) ~[?:1.8.0_252]
at net.minecraft.resources.AsyncReloader.func_219557_a(SourceFile:71) ~[?:?]
at net.minecraft.util.concurrent.TickDelayedTask.run(SourceFile:18) [?:?]
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213166_h(SourceFile:144) [?:?]
at net.minecraft.util.concurrent.RecursiveEventLoop.func_213166_h(SourceFile:23) [?:?]
at net.minecraft.server.MinecraftServer.func_213166_h(MinecraftServer.java:731) [?:?]
at net.minecraft.server.MinecraftServer.func_213166_h(MinecraftServer.java:141) [?:?]
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213168_p(SourceFile:118) [?:?]
at net.minecraft.server.MinecraftServer.func_213205_aW(MinecraftServer.java:714) [?:?]
at net.minecraft.server.MinecraftServer.func_213168_p(MinecraftServer.java:708) [?:?]
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213161_c(SourceFile:127) [?:?]
at net.minecraft.server.MinecraftServer.func_195568_a(MinecraftServer.java:1464) [?:?]
at net.minecraft.server.MinecraftServer.func_195560_a(MinecraftServer.java:450) [?:?]
at net.minecraft.server.MinecraftServer.func_71247_a(MinecraftServer.java:363) [?:?]
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:212) [?:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:613) [?:?]

caused by #215

This is already fixed.