It's easy to overlook if you have been Re-Amping or using another input through the Eleven Rack Rig such as the Mic. If this happens to you, stay calm, and check the RIG INPUT setting. If you are playing guitar then you want GUITAR selected as the input source.
You can access this setting from the front panel of the Eleven Rack or from the Eleven Rack Editor.
See the following video for steps
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