RPM Packaging is not working

[jyo64]

When I try to create an RPM Package for a flutter build I get the following error:

cp: cannot stat 'saber/*': No such file or directory
error: Bad exit status from /var/tmp/rpm-tmp.xMvFh2 (%install)
%source_date_epoch_from_changelog is set, but %changelog has no entries to take a date from
Bad exit status from /var/tmp/rpm-tmp.xMvFh2 (%install)

RPM build warnings:

RPM build errors:
MakeError
#0 AppPackageMakerRPM._make (package:flutter_app_packager/src/makers/rpm/app_package_maker_rpm.dart:179:7)

#1 FlutterDistributor.package (package:flutter_distributor/src/flutter_distributor.dart:182:35)

#2 CommandRunner.runCommand (package:args/command_runner.dart:212:13)

Unhandled exception:
MakeError
#0 AppPackageMakerRPM._make (package:flutter_app_packager/src/makers/rpm/app_package_maker_rpm.dart:179:7)

#1 FlutterDistributor.package (package:flutter_distributor/src/flutter_distributor.dart:182:35)

#2 CommandRunner.runCommand (package:args/command_runner.dart:212:13)

My SPEC file does not generate an attribute called changelog even if its in my make config file. Could it be an issue with make_rpm_config.dart?

[jyo64]

Maybe because in packages/flutter_app_packager/lib/src/makers/rpm/make_rpm_config.dart changelog is being read, but not written to the SPEC file.