minecraft launcher gets stuck at loading screen

: Initializing transformation service fml : Initialized transformation service mixin : MixinPlatformAgentDefault accepted container ModLauncher Root Container(4f56a0a2)

: Instancing new MixinPlatformAgentDefault for ModLauncher Root Container(4f56a0a2) : MixinPlatformAgentMinecraftForge rejected container ModLauncher Root Container(4f56a0a2) : Instancing new MixinPlatformAgentMinecraftForge for ModLauncher Root Container(4f56a0a2) : Adding mixin platform agents for container ModLauncher Root Container(4f56a0a2) : MixinService was successfully booted in 03:47:24.867] : SpongePowered MIXIN Subsystem Version=0.8 Source=file:/C:/Users/jairo%20alvarez/AppData/Roaming/.minecraft/libraries/org/spongepowered/mixin/0.8/mixin-0.8.jar Service=ModLauncher Env=CLIENT : Mixin bootstrap service .mojang.MixinServiceLaunchWrapperBootstrap is not available: LaunchWrapper is not available : Initializing transformation service mixin : Configuring option handling for services : Added Lets Encrypt root certificates as additional trust : Found ForgeSPI package specification 3

: Found ForgeSPI package implementation version 3.1.1+12+master.3ce14ad : FML found EventBus version : 3.0.3+63+master.b6b4769 : FML found AccessTransformer version : 2.2.0+57+master.16c1bdb

: FML found ModLauncher version : 6.1.1+74+master.966c698 : Injecting tracing printstreams for STDOUT/STDERR. : Found additional transformation services from discovery services:

: ModLauncher 6.1.1+74+master.966c698 starting: java version 1.8.0_51 by Oracle Corporation In the logs folder of your game directory.

Minecraft launcher gets stuck at loading screen