Quiz item analisys

generates hundreds of

Notice: Undefined index: in C:\Inetpub\moodle_PD\moodle\mod\quiz\questiontypes\multichoice\questiontype.php on line 364

Notice: Trying to get property of non-object in C:\Inetpub\moodle_PD\moodle\mod\quiz\questiontypes\multichoice\questiontype.php on line 364

also in PHP.err file

Object of class Format could not be converted to int in C:\Inetpub\moodle_PD\moodle\lib\excel\Worksheet.php on line 1593

also had to modify category.php lines 340 and 364

removed: if ($category->id != $this->defaultcategory) {

replaced: if ($category->id != $this->defaultcategory->id) {