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Published Sep. 10, 2025

NullPointerException when evaluating AuthLoginGroupSettingsUtil.isPromptEnabled

Written By

Ricardo Couso

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Issue

  • The following error is thrown in the logs every once in a while:
    2024-07-29 06:55:37.018 ERROR [http-nio-8080-exec-7][CTCollectionPreviewFilter:53] java.lang.NullPointerException
    java.lang.NullPointerException: null
        at com.liferay.portal.kernel.login.AuthLoginGroupSettingsUtil.isPromptEnabled(AuthLoginGroupSettingsUtil.java:19) ~[portal-kernel.jar:?]
        at com.liferay.friendly.url.internal.servlet.FriendlyURLServlet.getRedirect(FriendlyURLServlet.java:234) ~[?:?]
        [...]

Environment

  • Quarterly Release 2024.Q1

Resolution

  • This problem can occur if the whole OSGI module (aka bundle) login-web is blacklisted.
  • Blacklisting whole modules instead of specific components, if possible, can bring unintended behaviors like the error above.
  • In this case, the module login-web contains an implementation of the interface AuthLoginGroupSettings that is needed when invoking AuthLoginGroupSettingsUtil.isPromptEnabled.
  • Instead of blacklisting the whole module, consider blacklisting specific components within it. In particular, avoid blacklisting AuthLoginGroupSettingsImpl.

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