Some rpm files were missing.
Most likely, you want to create these signed copies.

Missing files:
/mnt/koji/packages/linstor/1.29.2/1.el7_9/data/signed/3fd3ac9e/noarch/linstor-common-1.29.2-1.el7_9.noarch.rpm
/mnt/koji/packages/linstor/1.29.2/1.el7_9/data/signed/3fd3ac9e/noarch/linstor-controller-1.29.2-1.el7_9.noarch.rpm
/mnt/koji/packages/linstor/1.29.2/1.el7_9/data/signed/3fd3ac9e/noarch/linstor-satellite-1.29.2-1.el7_9.noarch.rpm