If you’re willing to edit code, a fix was posted on the MMM-Trello github issue:
Edit this file: ~/MagicMirror/modules/MMM-Trello/node_modules/node-trello/lib/node-trello.js
Replace
else {
options.json = this.addAuthArgs(this.parseQuery(uri, args));
}
with
else {
options.json = true; // tells request to return json
// options.json = this.addAuthArgs(this.parseQuery(uri, args));
}
I’ve confirmed it worked for me. :)