Chewy Interview Experience

I had an interview with Chewy yesterday. There was a medium LC question asked and I was successfully able to produce the solution for the question. The interviewer asked me to write the code and when I first ran my solution there were few errors because I was not importing correct namespaces. Hence I imported them and ran again and it compiled correctly. I received a call from recruiter today saying that I was not selected and reason they said was my code when ran had error and also stated the exact errors I got and said that the errors are main reason why they are passing on me. What I don’t understand is the code compiled after I imported the namespace which was immediate. He said at least I am providing you a feedback and will get back to me next week. I am very confused. Did I do anything wrong ? Is the expectation not to have an error when we run the code ? Does correcting the errors and compiling the code and producing output has no value ?