BuddyPress.org

BuddyPress 2.8.2 (Fatal error on php, 7.0.21 and 7.1.7)

ON PHP 7.0.21
Fatal error: Uncaught Error: Call to undefined function mysql_escape_string() in /home/xx/public_html/w/xx.com.br/wp-content/themes/wplms/functions.php:60 Stack trace: #0 /home/xx/public_html/w/xx.com.br/wp-settings.php(424): include() #1 /home/xx/public_html/w/xx.com.br/wp-config.php(89): require_once('/home/xxx73/...') #2 /home/xx/public_html/w/xx.com.br/wp-load.php(37): require_once('/home/xxx73/...') #3 /home/x/public_html/w/xx.com.br/wp-admin/admin.php(31): require_once('/home/xxx73/...') #4 /home/xx/public_html/w/xx.com.br/wp-admin/plugins.php(10): require_once('/home/xxx73/...') #5 {main} thrown in /home/xx/public_html/w/xxx.com.br/wp-content/themes/wplms/functions.php on line 60

ON PHP 7.1.7 (Sometimes this error occurs for no reason. And the error disappears for no reason as well)
Fatal error: Uncaught Error: [] operator not supported for strings in /home/xx/public_html/w/xx.com.br/wp-content/plugins/vibe-course-module/includes/bp-course-classes.php:106 Stack trace: #0 /home/xx/public_html/w/xx.com.br/wp-content/plugins/vibe-course-module/includes/bp-course-template.php(625): BP_COURSE->get(Array) #1 /home/xx/public_html/w/xx.com.br/wp-content/themes/wplms/course/my-courses.php(20): bp_course_has_items('user_id=893&per...') #2 /home/xxx73/public_html/w/xxx.com.br/wp-includes/template.php(688): require_once('/home/xxx73/...') #3 /home/xxx73/public_html/w/xxx.com.br/wp-includes/template.php(647): load_template('/home/xxx73/...', true) #4 /home/xxx73/public_html/w/xxx.com.br/wp-content/themes/wplms/members/single/course.php(41): locate_template(Array, true) #5 /home/xxx73/public_html/w/xxx.com.br/wp-includes/template.php(688): require_once('/home/xxx73/...') #6 /home/xxx73/public_html/w/xxx.com.br/wp-includes/template.php(647): load_template in /home/xxx73/public_html/w/xxx.com.br/wp-content/plugins/vibe-course-module/includes/bp-course-classes.php on line 106

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Only working in PHP version 5.x
🙁

**using theme WPLMS 2.9.2**