Roku Error code 012 is a hardware issue related to the ethernet cable, it connects the router and the device or the device ports

2. Here, We will discuss some of the frequently
observed Roku errors briefly so that the users can
act accordingly to troubleshoot. Most software
failures can be solved by the users themselves by
restarting the device so that they can install the
latest software automatically. If they are still
unable to stream, then they should contact
customer support for a prompt and easy
resolution.
Toll Free +1-888-969-3736

3. Toll Free +1 (888) 969-3736

4. Toll Free +1 (888) 969-3736