no required module provides package github.com/GoogleCloudPlatform/esp-v2/src/go/proto/api/envoy/v12/http/backend_auth; to add it:

no required module provides package github.com/GoogleCloudPlatform/esp-v2/src/go/proto/api/envoy/v12/http/grpc_metadata_scrubber; to add it:

no required module provides package github.com/GoogleCloudPlatform/esp-v2/src/go/proto/api/envoy/v12/http/header_sanitizer; to add it:

no required module provides package github.com/GoogleCloudPlatform/esp-v2/src/go/proto/api/envoy/v12/http/path_rewrite; to add it:

no required module provides package github.com/GoogleCloudPlatform/esp-v2/src/go/proto/api/envoy/v12/http/service_control; to add it:

could not import github.com/GoogleCloudPlatform/esp-v2/src/go/proto/api/envoy/v12/http/backend_auth (invalid package name: "")

could not import github.com/GoogleCloudPlatform/esp-v2/src/go/proto/api/envoy/v12/http/grpc_metadata_scrubber (invalid package name: "")

could not import github.com/GoogleCloudPlatform/esp-v2/src/go/proto/api/envoy/v12/http/header_sanitizer (invalid package name: "")

could not import github.com/GoogleCloudPlatform/esp-v2/src/go/proto/api/envoy/v12/http/path_rewrite (invalid package name: "")