11.5.10.2 : during applying p5903765, adworker fails when running afgstuser.sql

hello,

During applying p5903765, adworker fails when running afgstuser.sql

the error is :

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RROR:  The "GUEST_USER_PWD" in vault is not set correctly, the current
value is "Not Defined" and failed FND user validation.
Oracle Applications requires a "GUEST" user account for special restricted
access functions.  The "<GUEST User Name>/<Password>" is stored in vault
with "GUEST_USER_PWD" preference name for Applications program use.  In this
instance the value is not set, or does not represent a valid
User_name/Password combination.

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Thank you.