I am having trouble while using the utopia client. It says an error.
Make sure that your network connection is working properly.
Try to reset proxy settings by following these steps:
Open "Options" at the main menu of Idyll.
Press "Settings" at the "Network Proxy" section.
Automatic proxy configuration URL should contain a path to a local file.
"wpad.dat" is a configuration file that automatically defines how web browsers work within Utopia Network.
In Windows:
file:///C:/Users/{Your user name}/AppData/Roaming/Utopia/Utopia%20Client/wpad.dat
In Linux:
~/.local/share/Utopia/Utopia%20Client/wpad.dat
Click "Reload". Close the window by pressing "OK".
Now, the browser should work properly.
SOURCE : https://u.is/en/faq.html#faq44