send error notification over websocket if tts fails

lib/utils/http-requestor.js

@@ -50,7 +50,11 @@ class HttpRequestor extends BaseRequestor {
    * @param {object} [params] - request parameters
    */
   async request(type, hook, params, httpHeaders = {}) {
+    /* jambonz:error only sent over ws */
+    if (type === 'jambonz:error') return;
+
     assert(HookMsgTypes.includes(type));
+
     const payload = params ? snakeCaseKeys(params, ['customerData', 'sip']) : null;
     const url = hook.url || hook;
     const method = hook.method || 'POST';