From 65d8135e2a401e3f80a4c2e0c1b5e2b6b9c103f0 Mon Sep 17 00:00:00 2001
From: rlaphoenix <rlaphoenix@pm.me>
Date: Wed, 8 Nov 2023 19:35:47 +0000
Subject: [PATCH] Ignore empty KID values in v4.0.0.0 PlayReadyHeaders

---
 pywidevine/pssh.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pywidevine/pssh.py b/pywidevine/pssh.py
index 4261b89..32c619f 100644
--- a/pywidevine/pssh.py
+++ b/pywidevine/pssh.py
@@ -254,6 +254,7 @@ class PSSH:
                     key_ids = [
                         x.text
                         for x in prr_header.findall("./wrm:DATA/wrm:KID", wrm_ns)
+                        if x.text
                     ]
                 elif prr_header_version == "4.1.0.0":
                     key_ids = [