When Vance is looking at the warehouse he states that it was built before the Civil War. This contradicts the file information on the warehouse that Ben found in the previous episode. On the info sheet found in the Records room it clearly states the date it was built was 1949.
When they recap Ben and Cal playing basketball with Autumn walking down the street at the end of the episode, Ben and Cal are in different positions than when the scene originally played through at the beginning.
Whilst an exciting effect, oxidizing gas cylinders are designed at a minimum to resist fire for 30 minutes or more. The cylinders used were not in a fire resistant cabinet but they absolutely would not have ignited let alone exploded within a few minutes as depicted.