diff --git a/ops/manifests/manifest.py b/ops/manifests/manifest.py
index 43105a3..8028d20 100644
--- a/ops/manifests/manifest.py
+++ b/ops/manifests/manifest.py
@@ -235,6 +235,9 @@ def installed_resources(self) -> FrozenSet[HashableResource]:
                     obj.name,
                     namespace=obj.namespace,
                 )
+            except (ManifestClientError):
+                log.exception(f"Cannot connect to the api endpoint, marking ({obj}) as missing")
+                continue
             except (ApiError, HTTPError):
                 log.exception(f"Didn't find expected resource installed ({obj})")
                 continue