Import *.csv with customers for the first time - "missing account"

Hi all,
I just started using ERPnext and was trying to add the list of my customers from another software. So I downloaded and completed the *.csv file and tried to upload it again. But the system says

_"Import Log

Import Failed
Error for row (#21) : Error: Row #1: Value missing for: Account
Error for row (#22) : Error: Row #1: Value missing for: Account
Error for row (#23) : Error: Row #1: Value missing for: Account
Error for row (#24) : Error: Row #1: Value missing for: Account
Error for row (#25) : Error: Row #1: Value missing for: Account
Error for row (#26) : Error: Row #1: Value missing for: Account
Error for row (#27) : Error: Row #1: Value missing for: Account
Error for row (#28) : Error: Row #1: Value missing for: Account
Error for row (#29) : Error: Row #1: Value missing for: Account
Error for row (#30) : Error: Row #1: Value missing for: Account
Error for row (#31) : Error: Row #1: Value missing for: Account
Error for row (#32) : Error: Row #1: Value missing for: Account
Error for row (#33) : Error: Row #1: Value missing for: Account
Error for row (#34) : Error: Row #1: Value missing for: Account
Error for row (#35) : Error: Row #1: Value missing for: Account
Error for row (#36) : Error: Row #1: Value missing for: Account
Error for row (#37) : Error: Row #1: Value missing for: Account
Error for row (#38) : Error: Row #1: Value missing for: Account
Error for row (#39) : Error: Row #1: Value missing for: Account
Error for row (#40) : Error: Row #1: Value missing for: Account
Error for row (#41) : Error: Row #1: Value missing for: Account
Error for row (#42) : Error: Row #1: Value missing for: Account
Error for row (#43) : Error: Row #1: Value missing for: Account
Error for row (#44) : Error: Row #1: Value missing for: Account
Error for row (#45) : Error: Row #1: Value missing for: Account
Error for row (#46) : Error: Row #1: Value missing for: Account
Error for row (#47) : Error: Row #1: Value missing for: Account
Error for row (#48) : Error: Row #1: Value missing for: Account"_

Is there some sort of a default account I should put in the column “account” which appears to be obligatory?
Or maybe I should set up some default accounts first?

Thanks

Nevermind, found the solution.