Unknown reason for the accident

Before this, it worked well, but one day it started to crash for unknown reasons. The same situation occurred on other devices.

The error message is as follows:

java.lang.UnsupportedOperationException: r

-------Stack Trace --------

   t3.p.b(Unknown Source:10)
   com.utazukin.ichaival.ArchiveJson.<init>(SourceFile:48)
   w3.t.b(SourceFile:56)
   t3.n.a(SourceFile:23)
   d4.q0.o(SourceFile:360)
   d4.q0.n(SourceFile:12)
   d4.c1.o(Unknown Source:28)
   d4.c1.n(SourceFile:12)
   g1.a0.o(SourceFile:68)
   g1.a0.m(SourceFile:13)
   h4.a.G0(SourceFile:5)
   u4.t.O1(SourceFile:72)
   g1.z.o(SourceFile:88)
   n4.a.k(Unknown Source:8)
   kotlinx.coroutines.h0.run(Unknown Source:104)
   kotlinx.coroutines.o0.o0(SourceFile:150)
   u4.t.w1(SourceFile:99)
   i.g.run(SourceFile:95)
   d.t0.run(SourceFile:254)
   java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
   java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
   java.lang.Thread.run(Thread.java:930)
-------------------------------

----------- Cause ------------

--------------------------------

Utazukin / Ichaival

Unknown reason for the accident #45