Thought I would help you out, but couldn't find the register link.
Finally found the register link on the wiki page, but trited to sign up and am getting this error.
Internal error
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Detected bug in an extension! Hook wfLanguageSelectorAbortNewAccount failed to return a value; should return true to continue hook processing or false to abort.
Backtrace:
#0 /var/www/vhosts/wiki.zmlingteam.org/public/includes/specials/SpecialUserlogin.php(337): wfRunHooks('AbortNewAccount', Array)
#1 /var/www/vhosts/wiki.zmlingteam.org/public/includes/specials/SpecialUserlogin.php(170): LoginForm->addNewAccountInternal()
#2 /var/www/vhosts/wiki.zmlingteam.org/public/includes/specials/SpecialUserlogin.php(112): LoginForm->addNewAccount()
#3 /var/www/vhosts/wiki.zmlingteam.org/public/includes/specials/SpecialUserlogin.php(17): LoginForm->execute()
#4 [internal function]: wfSpecialUserlogin(NULL, Object(SpecialPage))
#5 /var/www/vhosts/wiki.zmlingteam.org/public/includes/SpecialPage.php(791): call_user_func('wfSpecialUserlo...', NULL, Object(SpecialPage))
#6 /var/www/vhosts/wiki.zmlingteam.org/public/includes/SpecialPage.php(559): SpecialPage->execute(NULL)
#7 /var/www/vhosts/wiki.zmlingteam.org/public/includes/Wiki.php(254): SpecialPage::executePath(Object(Title))
#8 /var/www/vhosts/wiki.zmlingteam.org/public/includes/Wiki.php(64): MediaWiki->handleSpecialCases(Object(Title), Object(OutputPage), Object(WebRequest))
#9 /var/www/vhosts/wiki.zmlingteam.org/public/index.php(117): MediaWiki->performRequestForTitle(Object(Title), NULL, Object(OutputPage), Object(User), Object(WebRequest))
#10 {main}
