Read the statement by Michael Teeuw here.
MMM-Wallpaper gives black screen on one MM. Other one works.
- 
@Cliff365 show the output from npm start
and also open the developers window, ctrl-shift-i on the mm window,
select the console tab and enter wall in the filter field - 
@Cliff365 im guessing it this
if (typeof(fetch) === “undefined”) {
fetch = require(“fetch”);
}on the system that fails, (black screen) do
node -v
i bet its less than 18…
 - 
@sdetweil Thanks, I will take a look.
 - 
@sdetweil Where would that code go? Command line?
Node -v returns 16.19.0.
Do you know the command to update node?
 - 
@Cliff365 best thing to do is run my upgrade script
 - 
@sdetweil Thanks! I ran the script, and it’s been sitting at this for about an hour. I assume I should just reinstall MM.
 - 
@Cliff365 no. maybe get out?
try this
sudo apt-get -y remove nodes npmthen node -v
the npm install was supposed to be done in the module folder
 - 
On my system before Wallpaper was updated as well, I did a
npm install fetchin the module directory to get it back.might be worth a shot.
 - 
@sdetweil said in MMM-Wallpaper gives black screen on one MM. Other one works.:
sudo apt-get -y remove nodes npm
I think that did the trick. Thanks! node now reports v20,5,1
 - 
@Cliff365 sorry typo in command, my phone thought it knew better!!!
sudo apt-get remove nodejs -y 
