---- Minecraft Crash Report ----
// Oh - I know what I did wrong!

Time: 08/12/17 12:46 AM
Description: Exception in server tick loop

com.google.gson.JsonParseException: Unknown value 'tmf:'
	at ua$a.a(SourceFile:83)
	at ub.a(SourceFile:97)
	at nk.a(SourceFile:139)
	at sj.a(SourceFile:126)
	at nk.<init>(SourceFile:47)
	at qs.b(SourceFile:164)
	at clh.a(SourceFile:96)
	at clh.d(SourceFile:128)
	at net.minecraft.server.MinecraftServer.run(SourceFile:467)
	at java.lang.Thread.run(Thread.java:745)


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
	Minecraft Version: 17w49b
	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: 111830728 bytes (106 MB) / 262234112 bytes (250 MB) up to 4281597952 bytes (4083 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx4G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Player Count: 0 / 8; []
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.