Same thing for me 
@Ulrar : could you confirm it’s not necessary to create the file before launch the first installation please ?
If is not, could you explain this error please ?
for information, this is my configuration
|Version|core-2021.5.0|
|Installation Type|Home Assistant Supervised|
|Development|false|
|Supervisor|true|
|Docker|true|
|Virtual Environment|false|
|Python Version|3.8.9|
|Operating System Family|Linux|
|Operating System Version|4.19.0-16-arm64|
|CPU Architecture|aarch64|