Bugs that cause logcat errors and even app crashes

[Srrsrr123]

Describe the bug

Dear developer!
 In the process of using it, I found two bugs causing logcat errors. As shown in the figure, when pressing the button, logcat errors are generated. The overall experience of the software is good. You can see that the design is very attentive. Thank you very much for the efforts of the developers all the time. I hope to receive a reply.

Screenshots

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