Fatal error: Uncaught TypeError: formatTheory(): Argument #1 ($text) must be of type string, array given, called in /home/u994965865/domains/navychky.com.ua/public_html/course/lesson.php on line 198 and defined in /home/u994965865/domains/navychky.com.ua/public_html/includes/functions.php:10
Stack trace:
#0 /home/u994965865/domains/navychky.com.ua/public_html/course/lesson.php(198): formatTheory()
#1 {main}
thrown in /home/u994965865/domains/navychky.com.ua/public_html/includes/functions.php on line 10