Absolutely not!!! 😾 It's certainly fine if you come to the Product Owner role with software development experience, but it's not required.
As a Product Owner your job is to help your team coordinate their efforts to design, build, test, and deploy your MVP. Keep in mind that everyone on the team is an subject matter expert in their role. So, the key to working in a team is to trust your teammates and to treat them as partners.
When you get in a situations where you feel overwhelmed by complexity, technology, and/or terminology reach out to your team for help. You may think this is a sign of weakness, but it's actually a sign of strength and maturity since it shows you trust your team and you are helping to build their confidence and experience.
Finally, remember that none of us knows it all and if we ever should learn it all it's just going to change 😊 Relying on your teammates (and them relying on you) will reduce stress, conflict, and will help to speed up everyone's learning.