Chrome extension error in Opera

[Figoware]

Hi there,

When using the Chrome extension in Opera, all is working great, except notifications.
Here is the error message (dev mode in extensions):
Unchecked runtime.lastError while running notifications.create: Adding buttons to notifications is not supported. at g (chrome-extension://nfhmhhlpfleoednkpnnnkolmclajemef/background.js:34:407) at t (chrome-extension://nfhmhhlpfleoednkpnnnkolmclajemef/background.js:35:191) at F.b.h (chrome-extension://nfhmhhlpfleoednkpnnnkolmclajemef/background.js:36:237) at chrome-extension://nfhmhhlpfleoednkpnnnkolmclajemef/background.js:30:151 at IDBRequest.index.get.onsuccess (chrome-extension://nfhmhhlpfleoednkpnnnkolmclajemef/background.js:39:239)

Is there a way to support notifications in opera? It will be great and much appreciated!