Error upon install

I have this plugin installed on 2 website that are running the same version of wordpress. One of them doesn’t work and gives me this error when I try to create a snippit

Notice: Use of undefined constant ? – assumed ‘?’ in /home/dealeweb/public_html/dome-dating.com/blog/wp-content/plugins/embedit-pro/embed-it-pro.php on line 377

Notice: Use of undefined constant ? – assumed ‘?’ in /home/dealeweb/public_html/dome-dating.com/blog/wp-content/plugins/embedit-pro/embed-it-pro.php on line 399

https://www.ads-software.com/plugins/embedit-pro/