Error when deploying an iOS ipa

We've been having an exorbitant number of issues trying to deploy an app for iOS. We were able to successfully create a build in September, but needed to make some adjustments for IPv6 compatibility. Now when we try to create an iOS Application Store/Release deployment, we get the following returned in the Messages window:

[PAClient Error] Error: E0776 2017-10-27 15:14:03.181 xcodebuild[1216:81669] [MT] IDEDistribution: -[IDEDistributionLogging _createLoggingBundleAtPath:]: Created bundle at path '/var/folders/d_/1k9k2tf93qn6mxc0v0g4y0440000gn/T/GQMobile_2017-10-27_15-14-03.180.xcdistributionlogs'.

[PAClient Error] Error: E0776 2017-10-27 15:14:03.855 xcodebuild[1216:81669] [MT] IDEDistribution: Step failed: : Error Domain=IDEDistributionSigningAssetStepErrorDomain Code=0 "Locating signing assets failed." UserInfo={NSLocalizedDescription=Locating signing assets failed., IDEDistributionSigningAssetStepUnderlyingErrors=(

[PAClient Error] Error: E0776     "Error Domain=IDEProvisioningErrorDomain Code=9 \"\"GQMobile.app\" requires a provisioning profile.\" UserInfo={NSLocalizedDescription=\"GQMobile.app\" requires a provisioning profile., NSLocalizedRecoverySuggestion=Add a profile to the \"provisioningProfiles\" dictionary in your Export Options property list.}"

[PAClient Error] Error: E0776 )}

[PAClient Error] Error: E0776 error: exportArchive: "GQMobile.app" requires a provisioning profile.

[PAClient Error] Error: E0776 Error Domain=IDEProvisioningErrorDomain Code=9 ""GQMobile.app" requires a provisioning profile." UserInfo={NSLocalizedDescription="GQMobile.app" requires a provisioning profile., NSLocalizedRecoverySuggestion=Add a profile to the "provisioningProfiles" dictionary in your Export Options property list.}

[PAClient Error] Error: E0776 ** EXPORT FAILED **

No ipa file is generated on the Windows machine running Delphi Tokyo 10.2 Version 25.0.27659.1188, and the ipa file that is output into the PAServer\scratch-dir\[user]-[mac profile] directory on our Mac is not usable as a deployment build (the XCode Application Loader won't recognize it as a viable ipa). We are currently using XCode 9.0 Beta 5 (9M202q) on the Mac. We could really use some help getting this issue resolved. Our Android build went out a month ago just fine, but we've been struggling to get the iOS build out.