Installing laravel box for vagrant?

Question

linux

Wanted to try laravel boxing for vagrant. I did everything as written in the manual on the off site. But during the download process, I got the following error:
An error occurred while downloading the remote file. The error
message, if any, is reproduced below. Please fix this error and try
again.
SSL read: error:00000000:lib(0):func(0):reason(0), errno 104
Tell me what to do?