Fix log api client when no hardcoded encryption key

esphome/components/api/client.py

@@ -29,8 +29,9 @@ async def async_run_logs(config: dict[str, Any], address: str) -> None:
     port: int = int(conf[CONF_PORT])
     password: str = conf[CONF_PASSWORD]
     noise_psk: str | None = None
-    if CONF_ENCRYPTION in conf:
-        noise_psk = conf[CONF_ENCRYPTION][CONF_KEY]
+    if encryption_config := conf.get(CONF_ENCRYPTION):
+        if key := encryption_config.get(CONF_KEY):
+            noise_psk = key
     _LOGGER.info("Starting log output from %s using esphome API", address)
     cli = APIClient(
         address,