I am 100% sure this is fake.

I found the same picture on Twitter in a tweet from April 28,2020 , but in higher resolution:

You can see the registration on the aircraft clearly: D-AVXA. This registration is an Airbus Test registration, used by Airbus in Hamburg. Below the registration, you can read the Manufacturer Serial Number (MSN) 8557.

The aircraft with MSN 8557 is a A321 which was given Test registration D-AVXF during production and testing. It was produced for Indigo as passenger version and delivered with registration VT-IUA. The last two letters (UA) of that registration can be seen on the nose gear doors of the freighter aircraft.

Clearly,