diff --git a/src/backend/langflow/api/v1/endpoints.py b/src/backend/langflow/api/v1/endpoints.py
index ca5e1c5c9..56ca36d6f 100644
--- a/src/backend/langflow/api/v1/endpoints.py
+++ b/src/backend/langflow/api/v1/endpoints.py
@@ -57,6 +57,13 @@ def get_all():
         logger.info(f"Loading {len(custom_component_dicts)} category(ies)")
         for custom_component_dict in custom_component_dicts:
             # custom_component_dict is a dict of dicts
+            if len(custom_component_dict) > 1:
+                raise ValueError(
+                    f"Custom components must be in a single category. Found {len(custom_component_dict)} categories"
+                )
+            elif len(custom_component_dict) == 0:
+                continue
+
             category = list(custom_component_dict.keys())[0]
             logger.info(
                 f"Loading {len(custom_component_dict[category])} component(s) from category {category}"