Yellow triangle and hybrid warning light both came on at same time while driving

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Yellow triangle warning light and hybrid warning light both came on at same time while driving yesterday afternoon, 6/24 Car still ran fine to home. Parked and checked this morning. Condition still the same with both warning lights on. Could this be a computer issue or what? This is a first time problem. Please help me. Thank you This vehicle originally purchased in USA and shipped over. It has NEVER been any problem till now. I am a retired American (VET) living in Budapest, Hungary