Facebook ical - Error in iCal Parsing

[djtale]

Hello,

Facebook doesn't allow to download Birthday's event as iCal file.
So I have used a utility (https://github.com/mobeigi/fb2cal) and a Chrome extension which allows me to get an iCal file.

I have setup the module to use the iCal file but in the logs I'm seeing this warning :

Error in iCal Parsing.
[2020-05-24 13:59:39.346] [LOG] {
headers: {
'User-Agent': 'Mozilla/5.0 (Node.js 12.4) ' +
'MagicMirror/2.11.0 ' +
'(https://github.com/MichMich/MagicMirror/)'
},
auth: { user: '', pass: '', sendImmediately: 1 }
}

Do you know the reason why ?

Thanks