When processing recent runs at HLT2, several instances of the following error are appearing:
ERROR Hlt2QEE_ALPsToGammaGam... auto&& Sel::Utils::deref_if_ptr(T&&) [with T = const LHCb::ProtoParticle*&] : trying to derefernce nullptr
Further investigations are ongoing.
FYI: @dzuliani @isanders