I did quick_install jitsi-meet. when i demo kick participant error.
Can you expand the error, to see what is the actual error? Which version of prosody do you use?
Can you send the error or log as text, it is still not visible, you need to expand the iq message, there is content inside, which is hidden.
Hum, you are using the all moderators prosody plugin.
Did you apply this patch to your prosody: https://github.com/jitsi/jitsi-meet/blob/b01ad360da76d12538cd4070b23d1b891b8f70e9/resources/prosody-plugins/muc_owner_allow_kick.patch
The patch is against trunk prosody version, so you need to find and apply a similar patch in prosody 0.9.1 codebase.
Thanks for replying. I will try your guide.