Show a nicer error message when server is installing

resources/scripts/api/http.ts

@@ -25,8 +25,10 @@ http.interceptors.response.use(resp => {
     }
 
     return resp;
-}, () => {
+}, error => {
     store.getActions().progress.setComplete();
+
+    throw error;
 });
 
 // If we have a phpdebugbar instance registered at this point in time go