Roku Error Code 018 occurs due to a poor Internet/network connection and you have to remove the error to enjoy your show. There are a number of troubleshooting tips available to fix error code 018 on Roku. If you still face any problem to fix Roku error code 018, Just dial Smart TV Error toll-free number USA/Canada: +1-888-271-7267 and UK: +44-800-041-8324.