after creating user postgres many errors in wrapper.log

Hi,

for supervision reason, I've created the "postgres" user with safe password. After reboot the server, the service "ManageEngine ADSelfService Plus" don't start. I've an error 1.
In the file "C:\ManageEngine\ADSelfService Plus\logs\wrapper.log", I've found many JAVA errors

Could not load Logmanager "org.apache.juli.ClassLoaderLogManager"
java.lang.ClassNotFoundException: org.apache.juli.ClassLoaderLogManager
at [java.|sun.|com.|javax.|org.|]*{38}
WrapperManager Error: Unable to register the org.tanukisoftware.wrapper:type=WrapperManager MBean.
WrapperManager Error: java.lang.reflect.InvocationTargetException
WrapperManager Error: at [sun.|java.|org.|javax]*{57}
Caused by: java.lang.NoClassDefFoundError: org/apache/juli/FileHandler
WrapperSimpleApp Error: Class com.adventnet.start.ProductTrayIcon found but could not be initialized: java.lang.NoClassDefFoundError: Could not initialize class java.util.logging.LogManager
Exception in thread "Thread-0" java.lang.NoClassDefFoundError: Could not initialize class java.util.logging.LogManager

I've found in the "database_params.conf" file, that I can put the password in the entry
# password for the db can be specified here
#password public

But, after making this change, the service still don't work.

Where can I put the pg pwd ? Do I must remove safely the postgres user ?

Thanks in advance, Pascal