Changing the admin password in the User Manager throws an exception

[MikeJ1971]

What is the problem

When attempting to change the password of the admin in the User Manager (via the Dashboard) the web interface returns with "Server responded: 500 Server Error".

In the logs the following stack trace is given:

Caused by: org.exist.security.PermissionDeniedException: You cannot remove the primary group of an account.
	at org.exist.security.AbstractAccount.remGroup(AbstractAccount.java:157) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.functions.securitymanager.GroupMembershipFunction.removeGroupMembers(GroupMembershipFunction.java:274) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.functions.securitymanager.GroupMembershipFunction.eval(GroupMembershipFunction.java:198) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.BasicFunction.eval(BasicFunction.java:74) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.InternalFunctionCall.eval(InternalFunctionCall.java:41) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:65) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.ForExpr.processItem(ForExpr.java:251) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.ForExpr.eval(ForExpr.java:189) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.AbstractExpression.eval(AbstractExpression.java:71) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.PathExpr.eval(PathExpr.java:276) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.SequenceConstructor.eval(SequenceConstructor.java:81) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.DebuggableExpression.eval(DebuggableExpression.java:58) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.LetExpr.eval(LetExpr.java:111) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.LetExpr.eval(LetExpr.java:111) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.LetExpr.eval(LetExpr.java:111) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.LetExpr.eval(LetExpr.java:111) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.LetExpr.eval(LetExpr.java:111) ~[exist-core-5.0.0.jar:5.0.0]
	at org.exist.xquery.LetExpr.eval(LetExpr.java:111) ~[exist-core-5.0.0.jar:5.0.0]
...

It is possible to change the password via the sm:passwd function.

What did you expect

I'd expect the password to be changed without an exception being thrown.

Describe how to reproduce or add a test

Try changing the admin password via the web-based user manager.

Context information

Please always add the following information

• eXist-db version 5.0.0
• Java version 10.0.1
• MacOs
• 64 bit:
• JAR installer and Puppet module

[tuurma]

same as #93