error install

[myayo001]

Hello, I try to install the module on my magicmirror. but I have one error.

When I lauch the npm start dev, I have this :

starting module: octomirror-module
octomirror-module.js:110 Uncaught ReferenceError: OctoPrintClient is not defined
at Class.start (octomirror-module.js:110:29)
at startModules (loader.js:51:11)
at loader.js:38:6
at HTMLLinkElement.stylesheet.onload (loader.js:210:7)

in the config.js I have
{
module: “octomirror-module”,
position: “middle_center”,
config: {
//js octomirror stream.setAttribute (‘width’, ‘300’);
debugMode: true,
url: “http://192.168.0.30/”,
printerName: “D12 230”,
api_key: “CC9E078BF70443DC94CB4C664E13E236”,
streamUrl: ‘http://192.168.0.30/webcam/?action=stream/’,
interactive: false,
showDetailsWhenOffline: false,
}
},

thanks for help.