My users come in at trust level 1, so they should have all basic user functions, correct? But they can’t create posts. Am I missing something? i’ve looked at other 500/internal server error posts in ‘support’, but haven’t found anything i can translate into “what next”. Thanks.

This kind of thing should show up in /logs, what do you see there?

nothing that i can interpret. can i copy that into here?

Yup, be sure to look at all three tabs at the bottom and redactv sensitive info.

Info tab: Redis::CommandError (ERR Error running script (call to f_edb941c8f601fd6d7546b6603d5a03df60cc2d04): @user_script:9: user_script:9: attempt to perform arithmetic on a nil value ) /var/www/discourse/vendor/bundle/ruby/2.3.0/gems/redis-3.3.5/lib/redis/client.rb:121:in `call' backtrace: (won…

That’s an old version of Discourse, can you upgrade to latest?

nope. that’s in the hands of Discourse Hosting. is it very old?

We moved to Ruby 2.4 in Oct 11, 2017.

then i’ll contact Richard. will that solve the issue?

To be honest, I don’t think that the Ruby version is the issue here. This is happening inside Redis and it’s on a large multisite installation where the error is only happening with this forum. This must be something in data that is specific to this forum or category.

Update: The site setting max_topics_per_day was set to zero which was causing this problem. This site is running version 1.9.5-something (which is not an “old” version of Discourse, only two days old) This bug is fixed already but the fix is not backported to stable.

User can't post: 500 internal server error

Support

Topic		Replies	Views
500 Internal Server Error on Post create, my user account only Support	3	569	July 19, 2021
Internal Error 500 when creating a topic Bug	11	1538	September 18, 2015
500 Error While Posting a Topic Bug	15	913	August 5, 2020
Deactivated plugin causes Error 500 on post Support	16	3248	August 5, 2017
Create post with markdown date returns error 500 Support	6	173	August 2, 2025

User can't post: 500 internal server error

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