How to export a 360 HDR panorama scene screenshot via Blueprint?

Development Rendering
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2

Silly me forgot to check the logs, which contained:

LogScript: Error: Script Msg: Invalid texture supplied.
LogScript: Error: Script call stack:
    EUB_C.ExecuteUbergraph_EUB
    EUB_C.BndEvt__EUB_Button_0_K2Node_ComponentBoundEvent_1_OnButtonClickedEvent__DelegateSignature