Bitcode is not really important for Developer, BUT it is very important for user. because using bitCode App Store Compiler can make out app size become very very small than before

I found the solution : Just Try to wait for any hour or a day and use other connection except your current network connection, and the deployment process will run smoothly. i think it may because your many scheme, security roles, subscribtion etc that makes it needs a fast and clean network connection to complete it's process.