No enum constant bfz - loading and saving 1.12.2 chunks

15:07:18 sw Couldn't load chunk
java.lang.IllegalArgumentException: No enum constant bfz.
 at java.lang.Enum.valueOf(Enum.java:238)
 at bfz.valueOf(SourceFile:7)
 at bvm$a.a(SourceFile:96)
 at bwa.a(SourceFile:100)
 at bvx.b(SourceFile:123)
 at bwb.a(SourceFile:146)
 at bvx.a(SourceFile:103)
 at bvo.a(SourceFile:166)
 at bvo.a(SourceFile:81)
 at bmt.b(SourceFile:104)
 at bmt.a(SourceFile:84)
 at bmt.a(SourceFile:120)
 at sw.g(SourceFile:92)
 at sw.b(SourceFile:114)
 at te.<init>(SourceFile:40)
 at tf.c(SourceFile:171)
 at tf.c(SourceFile:263)
 at vj.d(SourceFile:349)
 at tw.a(SourceFile:772)
 at mp.a(SourceFile:126)
 at mp$b.a(SourceFile:18)
 at iv.a(SourceFile:10)
 at iv$$Lambda$1873/1582035725.run(Unknown Source)
 at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
 at java.util.concurrent.FutureTask.run(FutureTask.java:266)
 at k.a(SourceFile:174)
 at net.minecraft.server.MinecraftServer.w(SourceFile:675)
 at net.minecraft.server.MinecraftServer.v(SourceFile:631)
 at dej.v(SourceFile:155)
 at net.minecraft.server.MinecraftServer.run(SourceFile:535)
 at java.lang.Thread.run(Thread.java:745)


15:07:56 tr Couldn't load protochunk
java.lang.IllegalArgumentException: No enum constant bfz.
 at java.lang.Enum.valueOf(Enum.java:238)
 at bfz.valueOf(SourceFile:7)
 at bvm$a.a(SourceFile:96)
 at bwa.a(SourceFile:100)
 at bvx.b(SourceFile:123)
 at bwb.a(SourceFile:146)
 at bvx.a(SourceFile:103)
 at bvo.a(SourceFile:166)
 at bvo.a(SourceFile:81)
 at bmt.b(SourceFile:104)
 at bmt.a(SourceFile:84)
 at bmt.b(SourceFile:136)
 at tr.a(SourceFile:70)
 at tr.a(SourceFile:51)
 at tr$$Lambda$1628/509546797.apply(Unknown Source)
 at java.util.Map.computeIfAbsent(Map.java:957)
 at tr.a(SourceFile:50)
 at tr.a(SourceFile:25)
 at ace.c(SourceFile:89)
 at sw.d(SourceFile:143)
 at bsj.a(SourceFile:196)
 at bsj.a(SourceFile:92)
 at bsn.d(SourceFile:60)
 at bnt.a(SourceFile:296)
 at sw.a(SourceFile:299)
 at sx.a(SourceFile:247)
 at axm.a(SourceFile:149)
 at sx.i_(SourceFile:197)
 at net.minecraft.server.MinecraftServer.w(SourceFile:697)
 at net.minecraft.server.MinecraftServer.v(SourceFile:631)
 at dej.v(SourceFile:155)
 at net.minecraft.server.MinecraftServer.run(SourceFile:535)
 at java.lang.Thread.run(Thread.java:745)

15:08:47 sw Couldn't load chunk
java.lang.IllegalArgumentException: No enum constant bfz.
 at java.lang.Enum.valueOf(Enum.java:238)
 at bfz.valueOf(SourceFile:7)
 at bvm$a.a(SourceFile:96)
 at bwa.a(SourceFile:100)
 at bvx.b(SourceFile:123)
 at bwb.a(SourceFile:146)
 at bvx.a(SourceFile:103)
 at bvo.a(SourceFile:166)
 at bvo.a(SourceFile:81)
 at bmt.b(SourceFile:104)
 at bmt.a(SourceFile:84)
 at bmt.a(SourceFile:120)
 at sw.g(SourceFile:92)
 at sw.b(SourceFile:114)
 at sw.c(SourceFile:120)
 at te.a(SourceFile:85)
 at tf.c(SourceFile:122)
 at sx.i_(SourceFile:221)
 at net.minecraft.server.MinecraftServer.w(SourceFile:697)
 at net.minecraft.server.MinecraftServer.v(SourceFile:631)
 at dej.v(SourceFile:155)
 at net.minecraft.server.MinecraftServer.run(SourceFile:535)
 at java.lang.Thread.run(Thread.java:745)

15:08:50 bmt Failed to save chunk
java.lang.IllegalArgumentException: No enum constant bfz.
 at java.lang.Enum.valueOf(Enum.java:238)
 at bfz.valueOf(SourceFile:7)
 at bvm$a.a(SourceFile:96)
 at bwa.a(SourceFile:100)
 at bvx.b(SourceFile:123)
 at bwb.a(SourceFile:146)
 at bvx.a(SourceFile:103)
 at bvo.a(SourceFile:166)
 at bvo.a(SourceFile:81)
 at bmt.b(SourceFile:104)
 at bmt.a(SourceFile:220)
 at tr.a(SourceFile:96)
 at tr$$Lambda$1815/27351070.accept(Unknown Source)
 at java.lang.Iterable.forEach(Iterable.java:75)
 at tr.a(SourceFile:91)
 at sw.d(SourceFile:282)
 at sx.i_(SourceFile:201)
 at net.minecraft.server.MinecraftServer.w(SourceFile:697)
 at net.minecraft.server.MinecraftServer.v(SourceFile:631)
 at dej.v(SourceFile:155)
 at net.minecraft.server.MinecraftServer.run(SourceFile:535)
 at java.lang.Thread.run(Thread.java:745)