fix(node): exception condition

Author: TorstenDittmann

templates/node/lib/client.js.twig

@@ -115,10 +115,10 @@ class Client {
             let response = await axios(options);
             return response.data;
         } catch(error) {
-            if('response' in error) {
+            if('response' in error && error.response !== undefined) {
                 if(error.response && 'data' in error.response) {
                     if (typeof(error.response.data) === 'string') {
-                        throw new {{spec.title | caseUcfirst}}Exception(error.response.data, error.response.status, error.response.data);   
+                        throw new {{spec.title | caseUcfirst}}Exception(error.response.data, error.response.status, error.response.data);
                     } else {
                         throw new {{spec.title | caseUcfirst}}Exception(error.response.data.message, error.response.status, error.response.data);
                     }