fix: return null when throw on Auth

packages/next-auth/src/lib/index.ts

@@ -183,7 +183,15 @@ export function initAuth(
   return (...args: WithAuthArgs) => {
     if (!args.length) {
       // React Server Components
-      return getSession(headers(), config).then((r) => r.json())
+      return getSession(headers(), config)
+        .then((r) => r.json())
+        .then((data) => {
+          // error message from core Auth
+          // e.g. { message: "There was a problem with the server configuration..." }
+          if (data.message) return null
+          return data
+        })
+
     }
     if (args[0] instanceof Request) {
       // middleware.ts inline

packages/next-auth/test/actions.test.ts

@@ -107,3 +107,14 @@ describe("signIn action", () => {
     })
   })
 })
+
+describe("auth action", () => {
+  it("should return null on session when throws", async () => {
+    let p = "should not be visible"
+    const session = await NextAuth({ providers: [] }).auth()
+    if (!session) p = "login"
+
+    expect(session).toEqual(null)
+    expect(p).toEqual("login")
+  })
+})