Cannot modify header information

There is a problem with the plugin it produces an error.
Cannot modify header information – headers already sent in
The issue is there is an extra whitespace an empty line at the end of the /wp-content/plugins/litespeed-cache/src/vary.cls.php file.
I removed it once and it fixed the issue, but after updating the plugin it is back again.
Please remove this whitespace in your future updates.

Thank you