Time Machine cannot backup due to insufficient space on local source disk
Every time I try to backup, Time Machine is complaining about not enough space on the local disk. The external backup disk has plenty space (1 TB) and the my local Macbook drive has 2 GB space. Why does Time Machine need more than 2 GB on the local disk? How much space does it need in order to be able to backup? I never have a lot of space on the local drive, but would like to be able to backup, how can I achieve this?
The exact error message is:
Time Machine couldn’t complete the backup to “Time Machine”
Time Machine could not back up the disk “Macintosh HD - Data” because it is nearly full.
Delete some files on this disk and try again.
Currently I have BigSur 11.7.1 installed. When I search online I only find issues with space problems on the backup disk, but nothing about the local disk... strange because I cannot believe I am the only one with this problem.
MacBook Pro 13″, macOS 11.7