form field fixes

react-openapi/utils/openapi_loader.ts

@@ -76,6 +76,12 @@ function parseSchemaFields(
     }
 
     const type = mapOpenApiType(resolvedProp);
+    if (type === 'enum' && (!resolvedProp.enum || resolvedProp.enum.length === 0)) {
+      throw new Error(
+        `OpenAPI schema error: field "${resourceName}.${key}" is type "enum" but has no enum values. ` +
+        `Add an "enum" array with at least one value to the OpenAPI schema definition.`
+      );
+    }
     const override = overrides[key];
 
     // Explicitly skip 'id' as it's the primary key and handled elsewhere