We are experiencing the same issue in the upload_to_testflight fastlane step. This issue is present even when uploading to two different App Store Connect accounts. In the error log there is the following line which contains the same date for both attempts to upload to the two different App Store Connect accounts. Caused by: java.security.cert.CertificateExpiredException: NotAfter: Thu Oct 10 19:37:19 CEST 2024 Following the error log as above we get the message: The call to the iTMSTransporter completed with a non-zero exit status: 1. This indicates a failure. Password contains special characters, which may not be handled properly by iTMSTransporter. If you experience problems uploading to App Store Connect, please consider changing your password to something with only alphanumeric characters. Could not download/upload from App Store Connect! It's probably related to your password or your internet connection. Does anyone have any ideas what can be causing this?

i have the same issue