[SOLVED]no login for Administrator in web interface

[SOLVED]no login for Administrator in web interface

Hello, 
i have a problem with administrator login to the web interface in service desk plus.
when i prompt the credentials the system returns "username or password is incorrect"


i search in the logs and i find this: [08:31:31:344]|[02-22-2022]|[com.adventnet.authentication.internal.PAMImpl]|[INFO]|[59]: LoginException occured for user : administrator with msg : Couldn't send login result via callbacks|


i follow the instructions but the problem is the same.
the version is: 12.0 Build 12000
DB: postgres

anyone with a solution? thanks


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