Problem of creating virtual host in xampp 7.0.8 in mac

[sothea]

I have created the virtual host for xampp in my mac. I got an error " You don't have permission to access the requested directory. There is either no index document or the directory is read-protected.". What are the problem of this? Please help me.

<VirtualHost *:8181>
DocumentRoot "/Users/trysothea/Dropbox/projects"
ServerName localhost
ErrorLog "/Applications/XAMPP/logs/error_log"
<Directory "/Users/trysothea/Dropbox/projects">
Allow from all
</Directory>
</VirtualHost>

[Nobbie]

The user which executes the Apache process (either see httpd.conf and/or see your OSX process table) obviously is not allowed to access your local folder /Users/trysothea/Dropbox/projects