RPi 3b+ Name GPIO is not defined

[Sylvain Leroux]

Hello,
I've installed the last raspbian on a raspberry pi 3 b+
I've installed webiopi following the tutorial on the official website.
Now when I try to access to the interface via a browser: 127.0.0.1:8000, I have to enter username/password. I do it, it works but my interface doesn't want to load: ERR_CONTENT_LENGTH_MISMATCH.
In the terminal I have this error:
"NameError: name 'GPIO' is not defined"
Do you have any idea?
Thanks

[hal8000b]

There are possibly two or more errors here.

First make sure you have installed the patch for webiopi as you are using Pi3

Also make sure you have installed  python GPIO. You need to type:

sudo apt-get update

sudo apt-get install python3 python3-pip

sudo pip3 install RPi.GPIO

Next 127.0.0.1  is your localhost address, not the address of your Pi3.

127.0.0.1 will only work from the Raspberrry Pi itself.

You need to look at your router and find the raspberry pi address, then from

another commputer or device on your home network , start the browser on that

device and point it to your raspberry pi.

It may be something like

http://192.168.0.7:8000

but you need to find the correct IP address