What steps will reproduce the problem? 1. Install mod vjud 2. Define it in config: Component("search." .. domain) "vjud" server_user_role = "prosody:registered" parent_host = "xmpp." .. domain vjud_mode = "all" 3. See logs: prosody | modulemanager error Error initializing module 'vjud' on 'search.example.org': /usr/share/lua/5.4/prosody/core/moduleapi.lua:135: Failed to load plugin library 'vcard', error: /usr/lib/prosody/modules/share/lua/5.4/mod_vcard/vcard.lib.lua: No such file or directory prosody | stack traceback: prosody | [C]: in function 'error' prosody | /usr/share/lua/5.4/prosody/core/moduleapi.lua:135: in function 'prosody.core.moduleapi.require' prosody | /var/lib/prosody/custom_plugins/share/lua/5.4/mod_vjud.lua:7: in main chunk prosody | [C]: in function 'xpcall' prosody | /usr/share/lua/5.4/prosody/core/modulemanager.lua:291: in upvalue 'do_load_module' prosody | /usr/share/lua/5.4/prosody/core/modulemanager.lua:378: in function 'prosody.core.modulemanager.load' prosody | /usr/share/lua/5.4/prosody/core/modulemanager.lua:149: in function 'prosody.core.modulemanager.load_modules_for_host' prosody | /usr/share/lua/5.4/prosody/util/events.lua:81: in function </usr/share/lua/5.4/prosody/util/events.lua:77> prosody | (...tail calls...) prosody | /usr/share/lua/5.4/prosody/core/hostmanager.lua:108: in function 'prosody.core.hostmanager.activate' prosody | /usr/share/lua/5.4/prosody/core/hostmanager.lua:58: in field '?' prosody | /usr/share/lua/5.4/prosody/util/events.lua:81: in function </usr/share/lua/5.4/prosody/util/events.lua:77> prosody | (...tail calls...) prosody | /usr/share/lua/5.4/prosody/util/startup.lua:468: in field '?' prosody | /usr/share/lua/5.4/prosody/util/events.lua:81: in function </usr/share/lua/5.4/prosody/util/events.lua:77> prosody | (...tail calls...) prosody | /usr/share/lua/5.4/prosody/util/fsm.lua:25: in upvalue 'notify_transitioned' prosody | /usr/share/lua/5.4/prosody/util/fsm.lua:58: in method 'begin_startup' prosody | /usr/share/lua/5.4/prosody/util/startup.lua:494: in function 'prosody.util.startup.prepare_to_start' prosody | /usr/share/lua/5.4/prosody/util/startup.lua:953: in function 'prosody.util.startup.prosody' prosody | /usr/share/lua/5.4/prosody/util/async.lua:161: in function 'prosody.util.async.default_runner_func' prosody | /usr/share/lua/5.4/prosody/util/async.lua:149: in function </usr/share/lua/5.4/prosody/util/async.lua:147> What is the expected output? Working mod vjud What do you see instead? Not working vjud What version of the product are you using? On what operating system? Prosody 13.0.2 in docker container (https://github.com/prosody/prosody-docker/blob/master/Dockerfile), but a bit customised