I'm using odoo 12,https mode,when using Muk Documents module,I found an error

"Something happened while trying to contact the server, check that the server is online and that you still have a working network connection."  

It happens when download file is lager than 24MB,and in browswer console it showed"net::ERR_CONTENT_LENGTH_MISMATCH".
How can I deal this problem?Thanks.