==> test: Mounting shared folders...                                                                            
    test: /path/to/hosting-dir => /vagrant                                                                                                 
Vagrant was unable to mount VirtualBox shared folders. This is usually                                             
because the filesystem "vboxsf" is not available. This filesystem is                                               
made available via the VirtualBox Guest Additions and kernel module.                                               
Please verify that these guest additions are properly installed in the                                             
guest. This is not a bug in Vagrant and is usually caused by a faulty                                              
Vagrant box. For context, the command attempted was:                                                               
                                                                                                                   
mount -t vboxsf -o uid=1000,gid=1000,_netdev vagrant /vagrant                                                      
                                                                                                                   
The error output from the command was:                                                                             
                                                                                                                   
/sbin/mount.vboxsf: mounting failed with the error: No such device