A Ryanair flight travelling from Seville to Nantes declares a fuel emergency after an attempted landing at a popular airport in France fails, according to reports. The aircraft diverts to Brest Bretagne Airport instead of continuing to its planned destination. The diversion is attributed to the fuel situation following the unsuccessful landing attempt. The reports state that the flight issues the emergency notice and changes course during the approach and/or landing phase, rather than after reaching the intended route. Details on the passengers and crew are not specified in the provided accounts, and there is no information here about injuries or the cause of the landing failure. Both sources describe the same route, emergency declaration, and destination for the diversion, indicating a consistent account of the incident. The aircraft ultimately lands at Brest Bretagne Airport following the fuel emergency and failed landing attempt at the original French airport.