When I publish my project which has been run successfully without any error, Uipath says debug.log is used by another process while I closed all the files and folders.
Can anyone help me? Thanks
Welcome to our UiPath Forum! 
Is the debug.log file present in your project folder?
Does a simply Studio restart solve this issue?
Check the file debug.log in the task manager if it is opened closed it through end task. If issue still doesn’t resolve then restart your laptop\PC.
Hope it will work
Thanks, Ghazanfar. Now it can publish now.