Crash: 'Ticking screen' java.lang.NullPointerException: Ticking screen

---- Minecraft Crash Report ----
// Daisy, daisy...

Time: 4/5/17 5:23 PM
Description: Ticking screen

java.lang.NullPointerException: Ticking screen
	at io.netty.bootstrap.Bootstrap.checkAddress(Bootstrap.java:358)
	at io.netty.bootstrap.Bootstrap.doResolveAndConnect(Bootstrap.java:180)
	at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:162)
	at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:143)
	at bqv.b(SourceFile:241)
	at bqv.a(SourceFile:45)
	at bqv$1.a(SourceFile:144)
	at gd.l(SourceFile:381)
	at bqv.a(SourceFile:254)
	at blp.e(SourceFile:115)
	at bgr.t(SourceFile:1585)
	at bgr.av(SourceFile:956)
	at bgr.a(SourceFile:396)
	at net.minecraft.client.main.Main.main(SourceFile:123)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Client thread
Stacktrace:
	at io.netty.bootstrap.Bootstrap.checkAddress(Bootstrap.java:358)
	at io.netty.bootstrap.Bootstrap.doResolveAndConnect(Bootstrap.java:180)
	at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:162)
	at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:143)
	at bqv.b(SourceFile:241)
	at bqv.a(SourceFile:45)
	at bqv$1.a(SourceFile:144)
	at gd.l(SourceFile:381)
	at bqv.a(SourceFile:254)
	at blp.e(SourceFile:115)

-- Affected screen --
Details:
	Screen name: blp
Stacktrace:
	at bgr.t(SourceFile:1585)
	at bgr.av(SourceFile:956)
	at bgr.a(SourceFile:396)
	at net.minecraft.client.main.Main.main(SourceFile:123)

-- System Details --
Details:
	Minecraft Version: 17w14a
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 68429944 bytes (65 MB) / 233250816 bytes (222 MB) up to 1060372480 bytes (1011 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 17w14a
	LWJGL: 2.9.4
	OpenGL: GeForce GTX 970/PCIe/SSE2 GL version 4.5.0 NVIDIA 378.92, NVIDIA Corporation
	GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 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 (United Kingdom)
	Profiler Position: N/A (disabled)
	CPU: 8x Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz
#@!@# Game crashed! Crash report saved to: #@!@# C:\Users\Florian\AppData\Roaming\.minecraft\crash-reports\crash-2017-04-05_17.23.05-client.txt