Kairos Time Management

Fatal error: Uncaught TypeError: Argument 1 passed to learn_press_get_course() must be of the type int, null given, called in H:\root\home\femireis-001\www\synsol\wp-content\plugins\learnpress\inc\course\lp-course-functions.php on line 257 and defined in H:\root\home\femireis-001\www\synsol\wp-content\plugins\learnpress\inc\course\lp-course-functions.php:17 Stack trace: #0 H:\root\home\femireis-001\www\synsol\wp-content\plugins\learnpress\inc\course\lp-course-functions.php(257): learn_press_get_course() #1 H:\root\home\femireis-001\www\synsol\wp-content\themes\course-builder\learnpress-v4\single-course\price.php(28): learn_press_is_enrolled_course() #2 H:\root\home\femireis-001\www\synsol\wp-content\plugins\learnpress\inc\lp-template-functions.php(929): include('H:\\root\\home\\fe...') #3 H:\root\home\femireis-001\www\synsol\wp-content\plugins\learnpress\inc\lp-deprecated.php(781): learn_press_get_template() #4 H:\root\home\femireis-001\www\synsol\wp-includes\class-wp-hook.php(307): learn_press_course_price() #5 H:\root\h in H:\root\home\femireis-001\www\synsol\wp-content\plugins\learnpress\inc\course\lp-course-functions.php on line 17