Recently we removed `make generate-in-docker` to using native tooling instead. This broke for some users as we require GNU's tool chain to make it work. We need to document the required toolchain in the README and potentially use a more tolerant tool, i.e. sed.
Note this refers to building cluster-monitoring-operator and does not have effect on runtime behavior.
it is added in README, close this bug
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (OpenShift Container Platform 4.6 GA Images), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2020:4196