diff --git a/packages/next/src/lib/metadata/generate/meta.tsx b/packages/next/src/lib/metadata/generate/meta.tsx
index 96394bc7b008a..c291e85efbef3 100644
--- a/packages/next/src/lib/metadata/generate/meta.tsx
+++ b/packages/next/src/lib/metadata/generate/meta.tsx
@@ -100,6 +100,9 @@ export function MultiMeta({
   if (typeof contents === 'undefined' || contents === null) {
     return null
   }
+  if (!Array.isArray(contents)) {
+    contents = [contents]
+  }
 
   return MetaFilter(
     contents.map((content) => {
diff --git a/packages/next/src/lib/metadata/resolvers/resolve-opengraph.ts b/packages/next/src/lib/metadata/resolvers/resolve-opengraph.ts
index 780f3c2e45ab0..ac54047993366 100644
--- a/packages/next/src/lib/metadata/resolvers/resolve-opengraph.ts
+++ b/packages/next/src/lib/metadata/resolvers/resolve-opengraph.ts
@@ -166,6 +166,11 @@ export const resolveOpenGraph: FieldResolverExtraArgs<
     )
   }
 
+  /* 
+  warning: force type assertion maybe merge authors of openGraph with string type from Metadata into ResolvedOpenGraph, 
+  but it's not support a string type for authors of openGraph.
+  is there any other field that has the same issue?
+   */
   const resolved = {
     ...openGraph,
     title: resolveTitle(openGraph.title, titleTemplate),