You got the message because you opened a file that someone else made while using 20.0.363. If you have any version of 2020, it will open the file.
If you don’t, you can use this extension to convert the file to be a 2019 file:
You got the message because you opened a file that someone else made while using 20.0.363. If you have any version of 2020, it will open the file.
If you don’t, you can use this extension to convert the file to be a 2019 file: