In the 55th minutes the crew are in the cave with fluorescent glow sticks with no explanation of how they obtained them, considering they had few supplies.
The cockpit of the shuttle they use to take off from the planet has very old fashioned analog gauges and toggle switches. It appears to be from a 1960s aircraft. That would be very strange for an interstellar spaceship built in the future.
In the 66th minute they come across many nooses from which people have been hanged. The nooses are all bloodied which doesn't quite seem realistic.