I started running my forge server and able to use the mod.
However i received an error relating to the dungeons-gear with its recipe with minecraft gold sword.

[14:33:41] [Worker-Main-4/ERROR] [minecraft/RecipeManager]: Parsing error loading recipe dungeons_gear:gold_sword_smithing com.google.gson.JsonSyntaxException: Unknown item 'minecraft:golden__sword' at net.minecraft.item.crafting.Ingredient.lambda$valueFromJson$11(Ingredient.java:216) ~[?:?] at java.util.Optional.orElseThrow(Optional.java:408) ~[?:?] at net.minecraft.item.crafting.Ingredient.func_199803_a(Ingredient.java:215) ~[?:?] at net.minecraftforge.common.crafting.VanillaIngredientSerializer.parse(VanillaIngredientSerializer.java:41) ~[forge:?] at net.minecraftforge.common.crafting.CraftingHelper.getIngredient(CraftingHelper.java:155) ~[forge:?] at net.minecraft.item.crafting.Ingredient.func_199802_a(Ingredient.java:189) ~[?:?] at net.minecraft.item.crafting.SmithingRecipe$Serializer.func_199425_a_(SmithingRecipe.java:70) ~[?:?] at net.minecraft.item.crafting.SmithingRecipe$Serializer.func_199425_a_(SmithingRecipe.java:68) ~[?:?] at net.minecraft.item.crafting.RecipeManager.func_215377_a(RecipeManager.java:141) ~[?:?] at net.minecraft.item.crafting.RecipeManager.func_212853_a_(RecipeManager.java:61) ~[?:?] at net.minecraft.item.crafting.RecipeManager.func_212853_a_(RecipeManager.java:38) ~[?:?] at net.minecraft.client.resources.ReloadListener.func_215269_a(SourceFile:13) ~[?:?] at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:714) ~[?:?] at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478) ~[?:?] at net.minecraft.resources.AsyncReloader.func_219557_a(SourceFile:71) ~[?:?] at net.minecraft.resources.AsyncReloader.func_219560_a(SourceFile:70) ~[?:?] at java.util.concurrent.CompletableFuture$UniCompletion.claim(CompletableFuture.java:568) ~[?:?] at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:710) ~[?:?] at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506) ~[?:?] at java.util.concurrent.CompletableFuture.postFire(CompletableFuture.java:610) ~[?:?] at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:722) ~[?:?] at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478) ~[?:?] at net.minecraft.resources.AsyncReloader.func_219557_a(SourceFile:71) ~[?:?] at net.minecraft.resources.AsyncReloader.func_219560_a(SourceFile:70) ~[?:?] at java.util.concurrent.CompletableFuture$UniCompletion.claim(CompletableFuture.java:568) ~[?:?] at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:710) ~[?:?] at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506) ~[?:?] at java.util.concurrent.CompletableFuture.postFire(CompletableFuture.java:610) ~[?:?] at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:722) ~[?:?] at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478) ~[?:?] at net.minecraft.resources.AsyncReloader.func_219557_a(SourceFile:71) ~[?:?] at net.minecraft.resources.AsyncReloader.func_219560_a(SourceFile:70) ~[?:?] at java.util.concurrent.CompletableFuture$UniCompletion.claim(CompletableFuture.java:568) ~[?:?] at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:710) ~[?:?] at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506) ~[?:?] at java.util.concurrent.CompletableFuture.postFire(CompletableFuture.java:610) ~[?:?] at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:722) ~[?:?] at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478) ~[?:?] at net.minecraft.resources.AsyncReloader.func_219557_a(SourceFile:71) ~[?:?] at net.minecraft.resources.AsyncReloader.func_219560_a(SourceFile:70) ~[?:?] at java.util.concurrent.CompletableFuture$UniCompletion.claim(CompletableFuture.java:568) ~[?:?] at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:710) ~[?:?] at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506) ~[?:?] at java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2073) ~[?:?] at net.minecraft.resources.AsyncReloader$1.func_216873_a(SourceFile:53) ~[?:?] at net.minecraft.resources.AsyncReloader$1.func_216872_a(SourceFile:50) ~[?:?] at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1072) [?:?] at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506) [?:?] at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1705) [?:?] at java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1692) [?:?] at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290) [?:?] at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020) [?:?] at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656) [?:?] at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594) [?:?] at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183) [?:?]