Spark running error: (null) entry in command string: null chmod 0644

Run the spark program locally in the Windows operating system, and report the following error:
.... (null) entry in command string: null chmod 0644 .. (the destination directory is followed)

Solution:

Download the hadoop.dll file

And copy it to the c:\windows\system32 directory

Then re-run the code program

hadoop.dll file download address:
link: https://pan.baidu.com/s/1Rb5ROUQMSqp7SeQINlLZkA  extraction code: n8t6