Problems running monsterWeb

I'm a noob and not sure what I did or didn't do so any help would be greatly appreciated.

I believe I have followed the build instructions and the MonsterBorg Web UI instructions but I receive a "no module named cv2" error when I run any ideas?

piborg's picture

It looks like the OpenCV library for Python has not been installed.

You should be able to install it with this command:

sudo apt-get -y install libcv-dev libopencv-dev python-opencv

Once it has been installed the script should start working :)

I tried the above line and this is what I received

piborg's picture

It sounds like the libcv-dev package has been rolled in to the libopencv-dev package at some point.

Try this instead:

sudo apt-get -y install libopencv-dev python-opencv


Tried running the apt-get but a few packages fail to download...

Err:1 buster/main armhf gfortran-8 armhf 8.3.0-6+rpi1
  Connection failed [IP: 80]
Err:2 buster/main armhf libevent-pthreads-2.1-6 armhf 2.1.8-stable-4
  Could not connect to (, connection timed out [IP: 80]


Still getting "missing cv2 module" error.

piborg's picture

You may need to update apt-get first:

sudo apt-get update

Changed the morror and ran following

sudo apt-get update && sudo apt-get upgrade

Either of those things fixed it...

All good now :)

Seems close but not sure why it can't open port 80

piborg's picture

To open low numbered ports (like port 80) you need to give the script permission by using sudo:
sudo ./

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