Every time I try to scroll down my server list this crash happens.

Any help?

Need full crash report.

its not letting me see the full crash report

Try going to .minecraft/crash-reports or .minecraft/logs and find the file with the crash.

---- Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 11/25/17 3:01 PM
Description: Ticking screen

java.lang.NullPointerException: Ticking screen
at io.netty.bootstrap.Bootstrap.checkAddress(Bootstrap.java:273)
at io.netty.bootstrap.Bootstrap.doConnect(Bootstrap.java:150)
at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:132)
at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:113)
at net.minecraft.client.network.OldServerPinger.func_147225_b(OldServerPinger.java:275)
at net.minecraft.client.network.OldServerPinger.access$100(OldServerPinger.java:49)
at net.minecraft.client.network.OldServerPinger$1.func_147231_a(OldServerPinger.java:173)
at net.minecraft.network.NetworkManager.func_179293_l(NetworkManager.java:453)
at net.minecraft.client.network.OldServerPinger.func_147223_a(OldServerPinger.java:295)
at net.minecraft.client.gui.GuiMultiplayer.func_73876_c(GuiMultiplayer.java:108)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1694)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1024)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:349)
at net.minecraft.client.main.Main.main(SourceFile:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

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

-- Head --
Stacktrace:
at io.netty.bootstrap.Bootstrap.checkAddress(Bootstrap.java:273)
at io.netty.bootstrap.Bootstrap.doConnect(Bootstrap.java:150)
at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:132)
at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:113)
at net.minecraft.client.network.OldServerPinger.func_147225_b(OldServerPinger.java:275)
at net.minecraft.client.network.OldServerPinger.access$100(OldServerPinger.java:49)
at net.minecraft.client.network.OldServerPinger$1.func_147231_a(OldServerPinger.java:173)
at net.minecraft.network.NetworkManager.func_179293_l(NetworkManager.java:453)
at net.minecraft.client.network.OldServerPinger.func_147223_a(OldServerPinger.java:295)
at net.minecraft.client.gui.GuiMultiplayer.func_73876_c(GuiMultiplayer.java:108)

-- Affected screen --
Details:
Screen name: net.minecraft.client.gui.GuiMultiplayer
Stacktrace:
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1694)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1024)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:349)
at net.minecraft.client.main.Main.main(SourceFile:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.8.9
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: 772121760 bytes (736 MB) / 1140850688 bytes (1088 MB) up to 2147483648 bytes (2048 MB)
JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.19 Powered by Forge 11.15.1.2318 3 mods loaded, 3 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJAAAAAA mcp{9.19} [Minecraft Coder Pack] (minecraft.jar)
UCHIJAAAAAA FML{8.0.99.99} [Forge Mod Loader] (forge-1.8.9-11.15.1.2318-1.8.9.jar)
UCHIJAAAAAA Forge{11.15.1.2318} [Minecraft Forge] (forge-1.8.9-11.15.1.2318-1.8.9.jar)
Loaded coremods (and transformers):
GL info: ' Vendor: 'Intel' Version: '4.4.0 - Build 20.19.15.4549' Renderer: 'Intel(R) HD Graphics 530'
Launched Version: 1.8.9-forge1.8.9-11.15.1.2318-1.8.9
LWJGL: 2.9.4
OpenGL: Intel(R) HD Graphics 530 GL version 4.4.0 - Build 20.19.15.4549, Intel
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: No
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: ¦)fHalf
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 8x Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz

RPO isn't even installed..