It be working again

Common/build.gradle

@@ -1,29 +1,15 @@
-plugins {
-    id 'java'
-    id 'org.spongepowered.gradle.vanilla' version '0.2.1-SNAPSHOT'
-    id 'maven-publish'
-}
+archivesBaseName = "${mod_name.replace(" ", "")}-Common-${minecraft_version}"
 
-archivesBaseName = "${mod_name}-common-${minecraft_version}"
+dependencies {
 
-minecraft {
-    version(minecraft_version)
-    runs {
-        if (project.hasProperty('common_runs_enabled') ? project.findProperty('common_runs_enabled').toBoolean() : true) {
+}
 
-            server(project.hasProperty('common_server_run_name') ? project.findProperty('common_server_run_name') : 'vanilla_server') {
-                workingDirectory(this.file("run"))
-            }
-            client(project.hasProperty('common_client_run_name') ? project.findProperty('common_client_run_name') : 'vanilla_client') {
-                workingDirectory(this.file("run"))
-            }
-        }
+unimined.minecraft {
+    fabric {
+        loader fabric_loader
     }
-}
 
-dependencies {
-     compileOnly group:'org.spongepowered', name:'mixin', version:'0.8.5'
-     implementation group: 'com.google.code.findbugs', name: 'jsr305', version: '3.0.1'
+    defaultRemapJar = false
 }
 
 processResources {
@@ -32,21 +18,4 @@ processResources {
     filesMatching(['pack.mcmeta']) {
         expand buildProps
     }
-}
-
-publishing {
-    publications {
-        mavenJava(MavenPublication) {
-            groupId project.group
-            artifactId project.archivesBaseName
-            version project.version
-            from components.java
-        }
-    }
-
-    repositories {
-        maven {
-            url "file://" + System.getenv("local_maven")
-        }
-    }
-}
+}

Common/src/main/java/me/hypherionmc/morecreativetabs/client/data/CustomCreativeTabJsonHelper.java

@@ -0,0 +1,55 @@
+package me.hypherionmc.morecreativetabs.client.data;
+
+import com.google.gson.annotations.SerializedName;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import java.util.ArrayList;
+
+@NoArgsConstructor
+@AllArgsConstructor
+@Getter
+public class CustomCreativeTabJsonHelper {
+
+    @SerializedName("tab_enabled")
+    private boolean tabEnabled;
+
+    @SerializedName("tab_name")
+    private String tabName;
+
+    @SerializedName("tab_stack")
+    private TabIcon tabIcon;
+
+    @SerializedName("tab_background")
+    private String tabBackground;
+
+    private boolean replace;
+
+    @Setter
+    private boolean keepExisting;
+
+    @SerializedName("tab_items")
+    private ArrayList<TabItem> tabItems;
+
+    @AllArgsConstructor
+    @NoArgsConstructor
+    @Getter
+    public static class TabItem {
+        private String name;
+
+        @SerializedName("hide_old_tab")
+        private boolean hideOldTab;
+
+        private String nbt;
+    }
+
+    @AllArgsConstructor
+    @NoArgsConstructor
+    @Getter
+    public static class TabIcon {
+        private String name;
+        private String nbt;
+    }
+}

Common/src/main/java/me/hypherionmc/morecreativetabs/client/data/DisabledTabsJsonHelper.java

@@ -1,11 +1,17 @@
 package me.hypherionmc.morecreativetabs.client.data;
 
+import com.google.gson.annotations.SerializedName;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
 import java.util.ArrayList;
 
-/**
- * @author HypherionSA
- * Gson Helper class for loading disabled tabs
- */
+@AllArgsConstructor
+@NoArgsConstructor
+@Getter
 public class DisabledTabsJsonHelper {
-    public ArrayList<String> disabled_tabs;
+
+    @SerializedName("disabled_tabs")
+    private ArrayList<String> disabledTabs;
 }

Common/src/main/java/me/hypherionmc/morecreativetabs/client/data/OrderedTabsJsonHelper.java

@@ -0,0 +1,16 @@
+package me.hypherionmc.morecreativetabs.client.data;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+
+@NoArgsConstructor
+@AllArgsConstructor
+@Getter
+public class OrderedTabsJsonHelper {
+
+    private List<String> tabs;
+
+}