This is the translated text showing the reason the Ryanair aircraft could not depart CRL to MAD on its second attemp the day after they had to return.
Full story in french here:
200 passagers du vol Bruxelles - Madrid sequestrés par Ryanair
This time it was human error: The system of recording data in the cabin, which had been taken the previous night to analyze the data of the incident, had not been placed in the device but was sent to Barcelona. He had to wait for his return