Fix error when loading cert if tls is disabled (#4618)

If TLS is disabled, it should not be an error if no cert is given.

Fixes #4554.

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/config/test_tls.py b/tests/config/test_tls.py

index d8fd18a9cb..c260d3359f 100644
--- a/tests/config/test_tls.py
+++ b/tests/config/test_tls.py
@@ -65,7 +65,7 @@ s4niecZKPBizL6aucT59CsunNmmb5Glq8rlAcU+1ZTZZzGYqVYhF6axB9Qg=
 
         t = TestConfig()
         t.read_config(config)
-        t.read_certificate_from_disk()
+        t.read_certificate_from_disk(require_cert_and_key=False)
 
         warnings = self.flushWarnings()
         self.assertEqual(len(warnings), 1)