Can't start MCreator (Loading plugins)

So i downloaded MCreator2020.3 and uninstall 2020.2.

But when i start the 2020.3 it's stuck in "Loading Plugins" and not moving.

I tried to run "MCreator.bat" and get this log.

2020-05-25-15:12:15 [main/INFO] [Launcher] Starting MCreator 2020.3.21322 - 202000321322
2020-05-25-15:12:15 [main/INFO] [Launcher] Java version: 1.8.0_252, specification: 1.8, VM name: OpenJDK 64-Bit Server VM
2020-05-25-15:12:15 [main/INFO] [Launcher] Current JAVA_HOME for running instance: C:\Program Files\Pylo\MCreator\jdk\jre
2020-05-25-15:12:15 [main/DEBUG] [Preferences Manager] Loading preferences from C:\Users\YY\.mcreator\preferences
2020-05-25-15:12:15 [main/INFO] [Launcher] Installation path: C:\Program Files\Pylo\MCreator
2020-05-25-15:12:15 [main/INFO] [Launcher] User home of MCreator: C:\Users\YY\.mcreator\
2020-05-25-15:12:16 [AWT-EventQueue-0/ERROR] [STDERR] SLF4J: Class path contains multiple SLF4J bindings.
2020-05-25-15:12:16 [AWT-EventQueue-0/ERROR] [STDERR] SLF4J: Found binding in [jar:file:/C:/Program%20Files/Pylo/MCreator/lib/slf4j-nop-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]
2020-05-25-15:12:16 [AWT-EventQueue-0/ERROR] [STDERR] SLF4J: Found binding in [jar:file:/C:/Program%20Files/Pylo/MCreator/lib/slf4j-nop-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
2020-05-25-15:12:16 [AWT-EventQueue-0/ERROR] [STDERR] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
2020-05-25-15:12:16 [AWT-EventQueue-0/ERROR] [STDERR] SLF4J: Actual binding is of type [org.slf4j.helpers.NOPLoggerFactory]
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added stepsounds datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added damagesources datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added biomes datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added potions datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added biomedictionarytypes datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added mapcolors datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added pathnodetypes datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added achievements datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added particles datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added blocksitems datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added keybuttons datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added sounds datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added tabs datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added enhancements datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added entities datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added gamemodes datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/DEBUG] [Data List Loader] Added materials datamap to cache
2020-05-25-15:12:17 [AWT-EventQueue-0/WARN] [Plugin Loader] Plugin generator-1.12.2 does not specify minversion. Skipping this plugin.
2020-05-25-15:12:18 [AWT-EventQueue-0/INFO] [Plugin Loader] Loading plugin: core from .\plugins\mcreator-core.zip
2020-05-25-15:12:18 [AWT-EventQueue-0/INFO] [Plugin Loader] Loading plugin: generator-1.14.4 from .\plugins\generator-1.14.4.zip
2020-05-25-15:12:18 [AWT-EventQueue-0/INFO] [Plugin Loader] Loading plugin: generator-1.15.2 from .\plugins\generator-1.15.2.zip
2020-05-25-15:12:18 [AWT-EventQueue-0/INFO] [Plugin Loader] Loading plugin: generator-addon-1.14.x from .\plugins\generator-addon-1.14.x.zip
2020-05-25-15:12:18 [AWT-EventQueue-0/INFO] [Plugin Loader] Loading plugin: generator-datapack-1.14.x from .\plugins\generator-datapack-1.14.x.zip
2020-05-25-15:12:18 [AWT-EventQueue-0/INFO] [Plugin Loader] Loading plugin: generator-datapack-1.15.x from .\plugins\generator-datapack-1.15.x.zip
2020-05-25-15:12:18 [AWT-EventQueue-0/ERROR] [Exception] Uncaught exception in AWT-EventQueue-0
java.lang.NoSuchMethodError: com.google.gson.JsonParser.parseString(Ljava/lang/String;)Lcom/google/gson/JsonElement;
        at net.mcreator.blockly.data.ExternalBlockLoader.<init>(SourceFile:39) ~[mcreator.jar:?]
        at net.mcreator.blockly.data.a.<init>(SourceFile:17) ~[mcreator.jar:?]
        at net.mcreator.blockly.data.a.a(SourceFile:8) ~[mcreator.jar:?]
        at net.mcreator.ui.g.<init>(SourceFile:90) ~[mcreator.jar:?]
        at net.mcreator.ui.g.b(SourceFile:178) ~[mcreator.jar:?]
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311) ~[?:1.8.0_252]
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758) ~[?:1.8.0_252]
        at java.awt.EventQueue.access$500(EventQueue.java:97) ~[?:1.8.0_252]
        at java.awt.EventQueue$3.run(EventQueue.java:709) ~[?:1.8.0_252]
        at java.awt.EventQueue$3.run(EventQueue.java:703) ~[?:1.8.0_252]
        at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_252]
        at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74) ~[?:1.8.0_252]
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:728) ~[?:1.8.0_252]
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205) [?:1.8.0_252]
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) [?:1.8.0_252]
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105) [?:1.8.0_252]
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) [?:1.8.0_252]
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) [?:1.8.0_252]
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:82) [?:1.8.0_252]

Is it a code problem?