Really?    I know that scala is the reason why we cannot get the install to work on java 15.    I'm having issue with DB connectivity on Java 14.    really don't want to drop down below 14.

Having the same issue.  Here is a clip from my error log:

00:24:26,258  WARN c.m.i.s.DatabaseValidateServlet:52 - Can not connect database
java.sql.SQLException: Access denied for user 'db_u_mycollab'@'localhost' (using password: YES)
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129)
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)
	at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122)