Read the exert !
"You know, they landed, and everybody's cheering and everything and then all of a sudden somebody notices that something's gone wrong. Temperature's building up. Uh-oh! It shouldn't be like that," explained Grumman engineering manager John Coursen.
—Team Moon: How 400,000 People
Landed Apollo 11 on the Moon,
Catherine ThimmeshWhat second problem did Eagle have? The temperature built up in the fuel line. There was not enough fuel to reconnect with Columbia. The temperature inside the craft was too high. The cheering had distracted the scientists.