Hi Admin, can you please look into these persistent PHP errors or warnings:

1. ../inc/class_profile.php on line 78
PHP Warning: Creating default object from empty value

2. ../wp-include/functions.php on line 795 and 798
PHP Warning: stripos() expects parameter 1 to be string

3. ../wp-include/functions.php on line 790
PHP Warning: strstr() expects parameter 1 to be string

4. ../wp-include/functions.php on line 805
PHP Warning: strpos() expects parameter 1 to be string

5. ../wp-include/functions.php on line 806
PHP Warning: explode() expects parameter 2 to be string