Xcode stuck in "Uploading package to the App Store" stage while uploading
I faced the same problem, and first what I tried was to check my traffic. So I found a process called java (ironic).
If you will check info about this process there will be tab Open Files and Ports and there in the bottom of the log window, you will see %YourApp%.ipa. And in general if Sent Packets & Sent Bytes increasing that's mean uploading is not stuck it's just can be one of many issues such as:
- Bad connection
- Slow upload speed
- Accepting capacity of Apple servers
- Highload network
- etc.
For open Activity Monitor: Open Spotlight(cmd+space or ctrl+space) -> Type Activity Monitor -> open tab Network
Summary: Don't worry, and take your time :)
P.S. For increasing speed of upload you can not include bitcode.
P.S.S. Try also to use the Transporter app, sometimes it helps to speed up uploading. (https://apps.apple.com/in/app/transporter/id1450874784?mt=12)
UPDATE Now it's no longer called 'java', it's 'com.apple.dt.Xcode.ITunesSoftwareService'
I had this same problem. Trying to upload using Application Loader once you're on XCode 11 doesn't work.
My solution was to use the new Transporter app.
Check if Apple servers are responding from this link: https://www.apple.com/support/systemstatus/ Sometimes they face issues, Apple updates this page regularly.
In my case there was nothing to worry. It just took some time (like 2 hours). There can be many issues. Your internet upload speed can be slow at that time or an Apple server issue. Just sit back and relax.