fix a bug in Blender after rendering a photo in Cycles format, the file doesn't want to save

Could you tell me how to fix the error in Blender after rendering the photo in Cycles format, the file does not want to be saved and says that it is not Report: Error, Cannot read, Permission denied,

Check your disk space and write permissions on your save directory.

Welcome :tada:

Well… this…

…is actually a some feedback which comes from you operations system… especially you file system… so it seems you want to save the file in a place where you do not have the permission to save…
…so your title is not just missleading but simple wrong…

You may have to elaborate this to get a more suited answer.