IDP 3 migrated intercept flows

[Marco Naimoli]

Hello, after migrating Shibboleth IDP from version 3.4 to 4.1 I have a
problem with a custom
intercept: it checks the value of a couple of attributes, the intercept
flow is executed but in logs
I see:
WARN
[net.shibboleth.idp.profile.logic.AbstractAttributePredicate:105]|node019rqzth3w3nvw1iztta0t7xcai0|No
AttributeContext located for evaluation
and I suspect that this is the cause of the problem

The flow calls the bean (CheckUser) using:
<if test="checkUser.test(opensamlProfileRequestContext)" then="blockUser"
else="proceed"/>

The flow is configured on relying-party.xml in this way:
<bean parent="Shibboleth.SSO"
p:postAuthenticationFlows="#{{'customintercept',...

On version 3.4 it works perfectly
Any suggestion ?
Thank you
Marco
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