Agnoster Theme did not render right on my Mac

[JensEichbergKugel]

I Installed fish and omf and this works fine. But the direction path symbols did not render as it should. I only get the path with ?? Symbols instead of the normal agnoster design. Do I have to change some terminal settings to fix this design issue?

Environment report

Oh My Fish version:   7
OS type:              Darwin
Fish version:         fish, version 3.3.1
Git version:          git version 2.30.1 (Apple Git-130)
Git core.autocrlf:    no
Checking for a sane environment...
Your shell is ready to swim.

[wenwen12345]

You need to install the font to show the direction path symbols. The fira code can show this.