/run/systemd/units (The link cannot be used, because its target doesn't exist.)

Hi!

I wanted to see what the files are, example like "/run/systemd/units/invocation:var-tmp.mount"

All files which I tried to open in this folder report:

The link cannot be used, because its target doesn't exist.

Is this normal behavior of Systemd under the folder?
/run/systemd/units

Best regards!