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After upgrading Xcode Server from 11.1 (11A1027) to 11.2 (11B52), one of our Integration Build Bots is now failing with the following build error:Signing certificate is invalid. Signing certificate "Apple Development: ************ (**********)", serial number "68147D331AB9D359", is not valid for code signing. It may have been revoked or expired.Does anyone know where this certificate is coming from?I searched all the keychains on the Mac for both the xcodeserver account and my personal account, and cannot find any certificate with this serial number. I also checked the online developer account "Certificates, Identifiers & Profiles" and none of the certificates have this serial number.The targets in this project are set to "Automatically manage signing", with Team set to my company team and Signing Certificate set to "Development".Other projects on the Xcode Server continue to build properly with similar settings. I created a new bot on the same server for this project and it also fails with the same issue. However, if I create a bot for this project on a different xcode server running the same macOS and Xcode, the build works fine.Any insight would be approciated. NOTE: There have been no commits for the project since the last time the build worked on Xcode 11.1. Xcode Server is running on macOS 10.14.6 (18G1012).