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:832 Stack trace: #0 /home/pitard/www/buffalo/personlib.php(131): citem_getFormattedCitation('4313', 'web') #1 /home/pitard/www/buffalo/personlib.php(302): getPrettyCitations('N196') #2 /home/pitard/www/buffalo/getperson.php(104): getNotes('I901', 'I') #3 {main} thrown in /home/pitard/www/buffalo/extensions/citem_lib_citation.php on line 832