diff --git a/apps/api/src/controllers/v1/types.ts b/apps/api/src/controllers/v1/types.ts
index 20f1b775..12d1c501 100644
--- a/apps/api/src/controllers/v1/types.ts
+++ b/apps/api/src/controllers/v1/types.ts
@@ -292,6 +292,8 @@ export function legacyScrapeOptions(x: ScrapeOptions): PageOptions {
 }
 
 export function legacyDocumentConverter(doc: any): Document {
+  if (doc === null || doc === undefined) return doc;
+
   if (doc.metadata) {
     if (doc.metadata.screenshot) {
       doc.screenshot = doc.metadata.screenshot;