# 500 Error when posting, moment.tz runtime error

**URL:** https://meta.discourse.org/t/500-error-when-posting-moment-tz-runtime-error/315860
**Category:** Bug
**Created:** [July 11, 2024, 3:57am UTC](https://meta.discourse.org/t/500-error-when-posting-moment-tz-runtime-error/315860 "2024-07-11T03:57:05Z")
**Posts on this page:** 1
**Showing post:** 11

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### Author: ![KhoiUSA](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/khoiusa/32/373010_2.png) [@KhoiUSA](https://meta.discourse.org/u/KhoiUSA)
#### Post date: [July 24, 2024, 4:40pm UTC](https://meta.discourse.org/t/500-error-when-posting-moment-tz-runtime-error/315860/11 "2024-07-24T16:40:44Z")

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Hello, for your question on which version it is `3.3.0.beta5-dev`. For your question on the **[safe mode](https://meta.discourse.org/t/53504?silent=true)** aspect, when I enter [safe mode](https://meta.discourse.org/t/53504?silent=true) the button to insert the date/time disappears. I think this is related to the [Discourse Calendar (and Event)](https://meta.discourse.org/t/discourse-calendar-and-event/97376) plugin.

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