>
Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, null given in /home/pitard/www/buffalo/extensions/citem_lib_citation.php:797
Stack trace:
#0 /home/pitard/www/buffalo/showsource.php(121): citem_getFormattedSource('S86', 'caldiero1')
#1 {main}
thrown in /home/pitard/www/buffalo/extensions/citem_lib_citation.php on line 797
