Dynamic import error on client

I updated meteor to 1.6.1 version, now when I try to import dynamic packages on client I receive this error:

http.js?hash=8a08f913bc9ee45ce8aae2cd9cd201e542e61e68:172 Uncaught (in promise) Error: network
    at XMLHttpRequest.xhr.onreadystatechange (http.js?hash=8a08f913bc9ee45ce8aae2cd9cd201e542e61e68:172)

It seems that the server doesn’t respond. Previous versions worked well, does the same thing happen to someone?