Update version 4.3 broke my calendar

The latest update 4.3 broke my website’s calendar (see error message below), and I can no longer activate the plugin. This has been going on for 4 days now, and I can’t book any new business as a result.

My company is small and things like this have a big impact on us. Sent in a support ticket as well, but have received minimal communication, essentially only an initial “thanks for reaching out.”

Can someone please help?

Fatal error: Uncaught Less_Exception_Compiler: error evaluating functionfadeThe first argument to fade must be a color index: 189 in /home1/thelesu5/public_html/wp-content/plugins/ameliabooking/vendor/oyejorge/less.php/lib/Less/Tree/Call.php:80 Stack trace: #0 /home1/thelesu5/public_html/wp-content/plugins/ameliabooking/vendor/oyejorge/less.php/lib/Less/Tree/Expression.php(52): Less_Tree_Call->compile(Object(Less_Environment)) #1 /home1/thelesu5/public_html/wp-content/plugins/ameliabooking/vendor/oyejorge/less.php/lib/Less/Tree/Value.php(27): Less_Tree_Expression->compile(Object(Less_Environment)) #2 /home1/thelesu5/public_html/wp-content/plugins/ameliabooking/vendor/oyejorge/less.php/lib/Less/Tree/Rule.php(75): Less_Tree_Value->compile(Object(Less_Environment)) #3 /home1/thelesu5/public_html/wp-content/plugins/ameliabooking/vendor/oyejorge/less.php/lib/Less/Tree/Ruleset.php(94): Less_Tree_Rule->compile(Object(Less_Environment)) #4 /home1/thelesu5/public_html/wp-content/plugins/ameliabooking/vendor/oyejorge/less.php/l in /home1/thelesu5/public_html/wp-content/plugins/ameliabooking/vendor/oyejorge/less.php/lib/Less/Tree/Call.php on line 80