Error specifying filename in to_csv FileNotFoundError

I want to output the data frame to csv, but to_csv does not work.
When I try to print a data frame called result with the following code, I get an error.

code:

result.to_csv('directory/filename.csv', encoding='shift-jis')

error messages:

FileNotFoundError: [Errno2] No such file or directory: 'Directory/File Name.csv'

You can also read csv in the same directory with the pd.read_csv command, or you can try the directory name to_csv as ./".
Why can't I print to a folder that should be there?