Server crashes every time i start

i need help. im using the b team technic mod pack to launch my server but every time it just crasheswhen i check the console it says this:

2019-02-18 09:34:05 [INFO] Query running on 0.0.0.0:10386

2019-02-18 09:34:06 [SEVERE] Encountered an unexpected exception ReportedException

net.minecraft.util.ReportedException: Ticking entity

at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:674)

at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:276)

at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:587)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484)

at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)

Caused by: java.lang.NoSuchMethodError: net.minecraft.src.ModLoader.getMinecraftInstance()Lnet/minecraft/client/Minecraft;

at weather.entities.EntShockWave.tryKnockback(EntShockWave.java:99)

at weather.entities.EntShockWave.func_70071_h_(EntShockWave.java:171)

at net.minecraft.world.World.func_72866_a(World.java:2350)

at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:719)

at net.minecraft.world.World.func_72870_g(World.java:2311)

at net.minecraft.world.World.func_72939_s(World.java:2157)

at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:550)

at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:668)

... 4 more

2019-02-18 09:34:06 [SEVERE] This crash report has been saved to: /aternos/server/./crash-reports/crash-2019-02-18_09.34.06-server.txt

please help!

if you need the link here it is: https://mclo.gs/sGHLYCm

its a modpack, using the using technic launcher

i already tried downloading it and uploading it to another server but it still won't work, this one up there is the one on the new server

its attack on the b team