Here is a file permission setting to stop creating Cpnael error_log.

• Go to your Website Loaction from Cpanel Filemanager.

I went to my subdomain loaction at public_html/g.horje.com from Cpanel Filemanager

• Then, Change the file permission of error_log file

1. Click Rifgt Buton of Your Mouse
2. Select Change Permissions
3. Set all box blank
4. Click on Change Permision Button
5. Done