Portlet 3.0 Control Panel Apps cause unexpected errors
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Environment
- Liferay DXP 7.2
- Liferay DXP 7.3
Resolution
- This error indicates a compatibility issue between your custom development (configured with
javax.portlet.version=3.0) and the Liferay DXP 7.2/7.3 Control Panel.
- While your custom development may work correctly on its own, the chain of requests triggered when accessing 'My Sites' or the Global menu (and potentially other areas) forces other components to conform to the same Portlet 3.0 specification level. Since this is not the case, it eventually results in the aforementioned exception.
- Therefore, the only feasible workaround is to review your development to identify and modify any dependencies on Portlet 3.0-specific APIs, and adapt it to use Portlet 2.0 instead.
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