I had failed to notice when updating erlang-xmpp earlier this year that it had become a NIF package, and so I didn't modify the spec file to install its shared object files. This causes ejabberd 17.07 to fail to start: 2017-10-22 13:13:24.906 [error] <0.383.0> Failed to load NIF /usr/lib64/erlang/lib/cache_tab-1.0.9/priv/lib/ets_cache: Failed to load NIF library: '/usr/lib64/erlang/lib/cache_tab-1.0.9/priv/lib/ets_cache.so: cannot open shared object file: No such file or directory' (load_failed)
ejabberd-17.07-1.fc27 erlang-xmpp-1.1.13-2.fc27 erlang-cache_tab-1.0.9-3.fc27 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2017-ea86747c37
ejabberd-17.07-1.fc27, erlang-cache_tab-1.0.9-3.fc27, erlang-xmpp-1.1.13-2.fc27 has been pushed to the Fedora 27 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-ea86747c37
ejabberd-17.07-1.fc27, erlang-cache_tab-1.0.9-3.fc27, erlang-xmpp-1.1.13-2.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.