fix parsing when the manifest dir is empty

src/fidesctl/ctl/core/parse.py

@@ -3,15 +3,19 @@
 from fideslang.manifests import ingest_manifests
 from fideslang.parse import load_manifests_into_taxonomy
 
-from fidesctl.ctl.core.utils import echo_green
+from fidesctl.ctl.core.utils import echo_green, get_manifest_list
 
 
 def parse(manifests_dir: str) -> Taxonomy:
     """
     Parse local manifest file(s) into a Taxonomy.
     """
 
+    # Check if any manifests exist before trying to parse them
     print(f"Loading resource manifests from: {manifests_dir}")
+    if not get_manifest_list(manifests_dir):
+        print("No manifests found to parse, skipping...")
+        return Taxonomy()
     ingested_manifests = ingest_manifests(manifests_dir)
     taxonomy = load_manifests_into_taxonomy(ingested_manifests)
     echo_green("Taxonomy successfully created.")