A misconfiguration in either serverConnect or clientConnect.conf Authorization files.
Verify that the case spelling and syntax of the entries in the files match as documented.
Example of correct matching entries:serverConnect.conf *:admin:changeme:All
clientConnect.conf *:*:admin:changeme
Example of bad entries:serverConnect.conf *:admin:changeme:All
clientConnect.conf *:*:admin:test <--- Password mismatch
serverConnect.conf *:admin:changeme:All
clientConnect.conf *:*:admin:changeme:All <--- The ":All" is not required in this line
serverConnect.conf *:admin:changeme:ALL <--- Only "A" should be capitalized
clientConnect.conf *:*:admin:changeme
serverConnect.conf *::admin:changeme:All <--- Syntax doesn't require double colons
clientConnect.conf *:*:admin:changeme