The almost accident

In photography class on wednesday we devolped our film. We had a sub ,but he went over the steps in devolping. We devolped in sets of two,the first step was opening the film.Opening the film was challenging because you went in a room that was really small dark,because you don't want to expose your film.The room was like a colset ,but it was smaller.When I went in to open my film I opened a door that someone was already in,and they screamed and said no.I felt awful,I thought I ruined their film. I certainly learned a lesson when the door is shut knock first so you don't open a door when someone is already in it. I apologized a bunch of times because I didn't do it on purpose,but my classmate said don't worry about it. Thankfully their film turned out in everything,I was so nervous their film wouldn't turn out at all. Thankfully my classmate was not mad at me and it turned out to be okay.