What will be is the possibe mistake?

Am trying to upload file with url preview but I get this error
" ErrorException This driver does not support creating temporary URLs."

I’m getting this as well on my server – not on local though. Did you ever figure this out?

What filesystem driver are you using?
-If s3, do you have league/flysystem-aws-s3-v3 installed?
Is there any validation check on the file upload, like type or size?
Is the error being thrown in the browser or by a test?

If the filesystem is local and error is thrown by the browser, post your stacktrace or share link from error page.