Render Error - Cannot save


First of all, I would like to apologize, I am not sure to be on the good category but I need your help. I am a very beginner of blender trying to create the FOX logo animated to create a video for my mum’s birthday.
The issue is that I can not save the blender because I get the following message : render error - no such file or directory (no such file or directory) - cannot save 'C/render/fox final 0001.

could you please help me ?

Thanks in advance !

Maybe you are working on a Windows computer? In that case the path would need to be C:\render\fox_final_0001 - make sure there is a colon after the C.