Unexpected non-MediaWiki exception encountered, of type &quot;TypeError&quot;<br />
TypeError: implode(): Argument #2 ($array) must be of type ?array, string given in /home/bsbi/herbarium/htdocs/wk/languages/Language.php:2015<br />
Stack trace:<br />
#0 /home/bsbi/herbarium/htdocs/wk/languages/Language.php(2015): implode()<br />
#1 /home/bsbi/herbarium/htdocs/wk/includes/Pager.php(613): Language-&gt;pipeList()<br />
#2 /home/bsbi/herbarium/htdocs/wk/includes/ImagePage.php(948): ReverseChronologicalPager-&gt;getNavigationBar()<br />
#3 /home/bsbi/herbarium/htdocs/wk/includes/ImagePage.php(551): ImageHistoryPseudoPager-&gt;getBody()<br />
#4 /home/bsbi/herbarium/htdocs/wk/includes/ImagePage.php(122): ImagePage-&gt;imageHistory()<br />
#5 /home/bsbi/herbarium/htdocs/wk/includes/Wiki.php(450): ImagePage-&gt;view()<br />
#6 /home/bsbi/herbarium/htdocs/wk/includes/Wiki.php(63): MediaWiki-&gt;performAction()<br />
#7 /home/bsbi/herbarium/htdocs/wk/index.php(116): MediaWiki-&gt;initialize()<br />
#8 {main}<br />
<br />
#0 /home/bsbi/herbarium/htdocs/wk/languages/Language.php(2015): implode()<br />
#1 /home/bsbi/herbarium/htdocs/wk/includes/Pager.php(613): Language-&gt;pipeList()<br />
#2 /home/bsbi/herbarium/htdocs/wk/includes/ImagePage.php(948): ReverseChronologicalPager-&gt;getNavigationBar()<br />
#3 /home/bsbi/herbarium/htdocs/wk/includes/ImagePage.php(551): ImageHistoryPseudoPager-&gt;getBody()<br />
#4 /home/bsbi/herbarium/htdocs/wk/includes/ImagePage.php(122): ImagePage-&gt;imageHistory()<br />
#5 /home/bsbi/herbarium/htdocs/wk/includes/Wiki.php(450): ImagePage-&gt;view()<br />
#6 /home/bsbi/herbarium/htdocs/wk/includes/Wiki.php(63): MediaWiki-&gt;performAction()<br />
#7 /home/bsbi/herbarium/htdocs/wk/index.php(116): MediaWiki-&gt;initialize()<br />
#8 {main}<br />