Wrap yaml parsing errors

src/operator_repo/utils.py

@@ -10,6 +10,7 @@ import yaml
 from yaml.composer import ComposerError
 
 from operator_repo.exceptions import OperatorRepoException
+from yaml.parser import ParserError
 
 log = logging.getLogger(__name__)
 
@@ -40,6 +41,8 @@ def _load_yaml_strict(path: Path) -> Any:
             return yaml.safe_load(yaml_file)
         except ComposerError:
             raise OperatorRepoException(f"{path} contains multiple yaml documents")
+        except ParserError:
+            raise OperatorRepoException(f"{path} is not a valid yaml document")
 
 
 def load_yaml(path: Path) -> Any: