From 46d2b195b017e3d58b3e6fc11a87b22f5cde856f Mon Sep 17 00:00:00 2001
From: Max Schmitt <max@schmitt.mx>
Date: Wed, 13 Mar 2024 11:36:05 +0100
Subject: [PATCH] fix: postDataJSON without Content-Type header

---
 packages/playwright-core/src/client/network.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/playwright-core/src/client/network.ts b/packages/playwright-core/src/client/network.ts
index 4bd7698016..f58048655e 100644
--- a/packages/playwright-core/src/client/network.ts
+++ b/packages/playwright-core/src/client/network.ts
@@ -141,7 +141,7 @@ export class Request extends ChannelOwner<channels.RequestChannel> implements ap
       return null;
 
     const contentType = this.headers()['content-type'];
-    if (contentType.includes('application/x-www-form-urlencoded')) {
+    if (contentType?.includes('application/x-www-form-urlencoded')) {
       const entries: Record<string, string> = {};
       const parsed = new URLSearchParams(postData);
       for (const [k, v] of parsed.entries())