Just a general note to everyone who is not aware. When installing Guacamole 1.2.0 on Ubuntu 20.04 with Tomcat 9 and MYSQL 8.0.21, a very specific java connector needs to be used: mysql-connector-java-5.1.48-bin.jar
This can be found on the mysql site I tried it with other versions to no avail and will just throw errors. Have a great day, Andrew