Conflict with formcraft plugin

Hey,

i don’t really knows on which side the problem is, but if i activate your plugin, i can’t sent emails with our formcraft contact form anymore.

On server console there are this errors:

13148#13148: *99577 FastCGI sent in stderr: "PHP message: PHP Warning: count(): Parameter must be an array or an object that implements Countable in /***/httpdocs/wp-content/plugins/formcraft/formcraft-main.php on line 2149
PHP message: PHP Warning: in_array() expects parameter 2 to be array, null given in /***/httpdocs/wp-content/plugins/formcraft/formcraft-main.php on line 2156
PHP message: PHP Fatal error: Uncaught ArgumentCountError: Too few arguments to function convert_html_to_text(), 1 passed in /***//wp-content/plugins/formcraft/formcraft-main.php on line 2832 and exactly 2 expected in /***/httpdocs/wp-content/plugins/wptelegram/includes/html2text/html2text.php:27
Stack trace:
#0 /***/httpdocs/wp-content/plugins/formcraft/formcraft-main.php(2832): convert_html_to_text('\n <!DOCTYPE ...')
#1 /***/httpdocs/wp-includes/class-wp-hook.php(286): formcraft3_form_submit('')
#2 /***/httpdocs/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters('', Array)
#3 /***/httpdocs/wp-includes/plugin.php(453): WP_Hook->do_action(Array)
#4 /***/wp-admin/admin-ajax.php(99): do_action('wp_ajax_formcra...')
#5 {main}
thrown in /***/httpdocs/wp-cont" while reading response header from upstream