Getting Fatal Error on Plugin

I am getting this fatal error continually from your plugin, can you please tell me how to fix this?

2025/04/02 19:50:28 [error] 50330#50330: *203958 FastCGI sent in stderr: “PHP message: PHP Fatal error: Uncaught Error: Call to undefined function mc_legacy_template_draw_event() in /www/madisondanceacademycom_600/public/wp-content/plugins/my-calendar/my-calendar-output.php:234

Stack trace:

#0 /www/madisondanceacademycom_600/public/wp-content/plugins/my-calendar/my-calendar-output.php(155): my_calendar_draw_event(Object(stdClass), ‘calendar’, ‘2021-09-06’, ‘month’, ”, ‘mc-948a6a8e8cd1…’, Array)

#1 /www/madisondanceacademycom_600/public/wp-content/plugins/my-calendar/my-calendar-output.php(2153): my_calendar_draw_events(Array, Array, ‘2021-09-06’, ”, ‘mc-948a6a8e8cd1…’)

#2 /www/madisondanceacademycom_600/public/wp-content/plugins/my-calendar/my-calendar-shortcodes.php(101): my_calendar(Array)

#3 /www/madisondanceacademycom_600/public/wp-includes/shortcodes.php(434): my_calendar_insert(Array, ”, ‘my_calendar’)

#4 [internal function]: do_shortcode_tag(Array)

#5 /www/madisondanceacademycom_600/public/wp-includes/shortcodes.php(273): preg_replace_callback(‘/\\[(\\[?)” while reading response header from upstream, client: 20.171.207.38, server: madisondanceacademy.com, request: “GET /calendar/?cid=mc-948a6a8e8cd15db324902317a630b853&dy=26&mcat=4%2C1%2C2%2C3%2C5&month=9&time=week&yr=2021 HTTP/2.0”, upstream: “fastcgi://unix:/var/run/php8.1-fpm-madisondanceacademycom.sock:”, host: “madisondanceacademy.com:51389”