To correct the module for opencart 3

When you install module for opencart 3 multivendor everything works well except that from the admin panel are not edited products gives errors need to dig and to correct them. Please help. Here are the errors:

Fatal error: Uncaught exception Twig_Error_Syntax with message Unknown "endif" tag in "catalog/product_form.twig" at line 37. in /var/www/vargashi/data/www/vargashi.EN/system/library/template/Twig/Parser.php:178 Stack trace: #0 /var/www/vargashi/data/www/vargashi.ru/system/library/template/Twig/Parser.php(100): Twig_Parser->subparse(NULL, false) #1 /var/www/vargashi/data/www/vargashi.ru/system/library/template/Twig/Environment.php(619): Twig_Parser->parse(Object(Twig_TokenStream)) #2 /var/www/vargashi/data/www/vargashi.ru/system/library/template/Twig/Environment.php(671): Twig_Environment->parse(Object(Twig_TokenStream)) #3 /var/www/vargashi/data/www/vargashi.ru/system/library/template/Twig/Environment.php(396): Twig_Environment->compileSource({{ header }}{{ ..., catalog/product...) #4 /var/www/vargashi/data/www/storage/modification/system/library/template/twig.php(46): Twig_Environment->loadTemplate(catalog/product...) #5 /var/www/vargashi/data/www/vargashi.ru/system/library/template.php(51): TemplateTwig->ren in /var/www/vargashi/data/www/vargashi.ru/system/library/template/Twig/Parser.php on line 178