: Can you try to fix this by replacing the getting of the active workbench window with:
Must be that there is no active window available on the event always. Just quick check and if it works make the PR.
SUCCESS: Integrated in
inspectIT - Integration #223INSPECTIT-2262: Open Alert Handler throws NPE because he can not load (ivan.senic: d667b541fc0da67f1d24a503c9c628b144ad80a0)