Error message

• Warning: A non-numeric value encountered in _quiz_date() (line 93 of /home1/varshney/public_html/sapbeginner/sites/all/modules/quiz/quiz_datetime.inc).
• Warning: A non-numeric value encountered in _quiz_date() (line 93 of /home1/varshney/public_html/sapbeginner/sites/all/modules/quiz/quiz_datetime.inc).
• Warning: A non-numeric value encountered in _quiz_date() (line 93 of /home1/varshney/public_html/sapbeginner/sites/all/modules/quiz/quiz_datetime.inc).
• Warning: A non-numeric value encountered in _quiz_date() (line 93 of /home1/varshney/public_html/sapbeginner/sites/all/modules/quiz/quiz_datetime.inc).
• Warning: A non-numeric value encountered in _quiz_date() (line 93 of /home1/varshney/public_html/sapbeginner/sites/all/modules/quiz/quiz_datetime.inc).
• Warning: A non-numeric value encountered in _quiz_date() (line 93 of /home1/varshney/public_html/sapbeginner/sites/all/modules/quiz/quiz_datetime.inc).
• Notice: Trying to access array offset on value of type int in element_children() (line 6290 of /home1/varshney/public_html/sapbeginner/includes/common.inc).
• Notice: Trying to access array offset on value of type int in element_children() (line 6290 of /home1/varshney/public_html/sapbeginner/includes/common.inc).
• Deprecated function: implode(): Passing glue string after array is deprecated. Swap the parameters in drupal_get_feeds() (line 385 of /home1/varshney/public_html/sapbeginner/includes/common.inc).