Upload of debian package fails with exception

Attempting to upload the "SentinelAgent_linux_v4_0_3_11.deb" debian package to a hosted APT repository fails with an exception:

2020-06-03 12:44:38,215-0500 ERROR [qtp1103812860-204] admin org.sonatype.nexus.coreui.UploadResource - Unable to perform upload to repository elc-required
java.io.IOException: invalid entry trailer. not read the content? Occured at byte: 10420954
at org.sonatype.nexus.repository.apt.internal.org.apache.commons.compress.archivers.ar.ArArchiveInputStream.getNextArEntry(ArArchiveInputStream.java:146)
at org.sonatype.nexus.repository.apt.internal.org.apache.commons.compress.archivers.ar.ArArchiveInputStream.getNextEntry(ArArchiveInputStream.java:240)
at org.sonatype.nexus.repository.apt.internal.AptPackageParser.parsePackage(AptPackageParser.java:45)
at org.sonatype.nexus.repository.apt.AptUploadHandler.handle(AptUploadHandler.java:72)
at org.sonatype.nexus.repository.upload.internal.UploadManagerImpl.handle(UploadManagerImpl.java:98)

This package can be listed and extracted using standard dpkg tooling, and it can be installed with apt. So it seems like this is a bug on our side?