Anymorph

Dear All, On 29.11.2020 my all files are encrypted by .weui extension. I cant decrypt my files using decrypt_STOPDjvu tool. below message is showing. No key for New Variant online ID: MpjbOb5QvnpPPQJW8zDubwEpX6Cb4niHy13IvM1N Notice: this ID appears to be an online ID, decryption is impossible Can you please suggest me a solution.