# How to solve this bug? Is it a built-in bug of the version?

**URL:** <https://hub.moon9.ca/t/bug-bug/255>\
**Category:** OMate\
**Created:** [April 17, 2026, 1:31pm UTC](https://hub.moon9.ca/t/bug-bug/255 "2026-04-17T13:31:05Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![吴\_美蓉](https://hub.moon9.ca/user_avatar/hub.moon9.ca/%E5%90%B4_%E7%BE%8E%E8%93%89/32/988_2.png) [@吴\_美蓉](https://hub.moon9.ca/u/%E5%90%B4_%E7%BE%8E%E8%93%89)\
**Post date:** [April 17, 2026, 1:31pm UTC](https://hub.moon9.ca/t/bug-bug/255/1 "2026-04-17T13:31:05Z")

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I am an iOS user, and I keep encountering the error “Application error: Bad state: Cannot add new events after calling close” when using the software. Re-downloading the software does not solve the problem. Is there any other way to fix it?