Here is the crash report :

---- Minecraft Crash Report -------- Minecraft Crash Report ----// My bad.
Time: 7/1/19 10:45 PMDescription: mouseClicked event handler
java.lang.NoClassDefFoundError: Could not initialize class io.netty.bootstrap.Bootstrap at jb.a(SourceFile:326) at cvo.a(SourceFile:1641) at ddg$a.e(SourceFile:380) at ddg$a.a(SourceFile:311) at ddg$a.mouseClicked(SourceFile:252) at cwq.mouseClicked(SourceFile:322) at cxp.mouseClicked(SourceFile:27) at cvp.b(SourceFile:86) at czx.wrapScreenError(SourceFile:441) at cvp.a(SourceFile:86) at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36) at org.lwjgl.system.JNI.invokeV(Native Method) at org.lwjgl.glfw.GLFW.glfwPollEvents(GLFW.java:3101) at cuh.l(SourceFile:425) at cuh.c(SourceFile:283) at cvo.b(SourceFile:1023) at cvo.e(SourceFile:976) at cvo.b(SourceFile:411) at net.minecraft.client.main.Main.main(SourceFile:154)

A detailed walkthrough of the error, its code path and all known details is as follows:---------------------------------------------------------------------------------------
– Head --Thread: Client threadStacktrace: at jb.a(SourceFile:326) at cvo.a(SourceFile:1641) at ddg$a.e(SourceFile:380) at ddg$a.a(SourceFile:311) at ddg$a.mouseClicked(SourceFile:252) at cwq.mouseClicked(SourceFile:322) at cxp.mouseClicked(SourceFile:27) at cvp.b(SourceFile:86)
– Affected screen --Details: Screen name: ddfStacktrace: at czx.wrapScreenError(SourceFile:441) at cvp.a(SourceFile:86) at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36) at org.lwjgl.system.JNI.invokeV(Native Method) at org.lwjgl.glfw.GLFW.glfwPollEvents(GLFW.java:3101) at cuh.l(SourceFile:425) at cuh.c(SourceFile:283) at cvo.b(SourceFile:1023) at cvo.e(SourceFile:976) at cvo.b(SourceFile:411) at net.minecraft.client.main.Main.main(SourceFile:154)
– System Details --Details: Minecraft Version: 1.14.3 Operating System: Mac OS X (x86_64) version 10.14.5 Java Version: 1.8.0_74, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 633441568 bytes (604 MB) / 1644167168 bytes (1568 MB) up to 2147483648 bytes (2048 MB) JVM Flags: 7 total; -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M Launched Version: 1.14.3 LWJGL: 3.2.2 build 10 OpenGL: AMD Radeon Pro 580 OpenGL Engine GL version 2.1 ATI-2.9.26, ATI Technologies Inc. GL Caps: Using GL 1.3 multitexturing.Using GL 1.3 texture combiners.Using framebuffer objects because ARB_framebuffer_object is supported and separate blending is supported.Shaders are available because OpenGL 2.1 is supported.VBOs are available because OpenGL 1.5 is supported.
Using VBOs: Yes Is Modded: Probably not. Jar signature remains and client brand is untouched. Type: Client (map_client.txt) Resource Packs:  Current Language: English (US) CPU: 8x Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz