The app suddenly crashes and exits by itself as I play it in seconds

Project Information

• Repository : https://github.com/Shirakumo/Ocelot?files=1
• Title : Ocelot
• Publisher : Shirakumo

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Expected behavior

Supposedly, the app does not crash while I'm playing it.

Actual behavior

When I play this app within tens of seconds, the app suddenly crashes and exits by itself.

How to reproduce

• Install and open the app
• The next step is to play the app in a few tens of seconds
• Then you will find the same problem with me that application crashes and exit by itself.

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• Device: Xiaomi Redmi 4X
• Operating system: Marshmallow, 6.0.1 mmb29m (CPU: Octa-core Max 1.9 GHz, RAM: 2 GB)
• Application Version: 0.2

Recording Of The Bug

Proof of Work Done

https://github.com/apadet90

Logcat

05-21 01:56:08.501 13983 14136 E AndroidRuntime: FATAL EXCEPTION: Thread-2191
05-21 01:56:08.501 13983 14136 E AndroidRuntime: Process: org.shirakumo.ocelot, PID: 13983
05-21 01:56:08.501 13983 14136 E AndroidRuntime: java.util.ConcurrentModificationException
05-21 01:56:08.501 13983 14136 E AndroidRuntime: at java.util.ArrayList$ArrayListIterator.next(ArrayList.java:573)
05-21 01:56:08.501 13983 14136 E AndroidRuntime: at org.shirakumo.lichat.Client.process(Client.java:192)
05-21 01:56:08.501 13983 14136 E AndroidRuntime: at org.shirakumo.lichat.Client.run(Client.java:170)
05-21 01:56:08.501 13983 14136 E AndroidRuntime: at java.lang.Thread.run(Thread.java:818)