Exception encountered, of type &quot;TypeError&quot;<br />
[77f54ee8] /wiki/api.php?action=query&amp;list=categorymembers&amp;cmtitle=Category:Physics   TypeError from line 267 of /home/web/websites/static/olpc-france/wiki/includes/api/ApiQueryBase.php: count(): Argument #1 ($value) must be of type Countable|array, string given<br />
Backtrace:<br />
#0 /home/web/websites/static/olpc-france/wiki/includes/api/ApiQueryCategoryMembers.php(92): ApiQueryBase-&gt;addWhereFld()<br />
#1 /home/web/websites/static/olpc-france/wiki/includes/api/ApiQueryCategoryMembers.php(39): ApiQueryCategoryMembers-&gt;run()<br />
#2 /home/web/websites/static/olpc-france/wiki/includes/api/ApiQuery.php(286): ApiQueryCategoryMembers-&gt;execute()<br />
#3 /home/web/websites/static/olpc-france/wiki/includes/api/ApiMain.php(1233): ApiQuery-&gt;execute()<br />
#4 /home/web/websites/static/olpc-france/wiki/includes/api/ApiMain.php(433): ApiMain-&gt;executeAction()<br />
#5 /home/web/websites/static/olpc-france/wiki/includes/api/ApiMain.php(405): ApiMain-&gt;executeActionWithErrorHandling()<br />
#6 /home/web/websites/static/olpc-france/wiki/api.php(88): ApiMain-&gt;execute()<br />
#7 {main}<br />