When you deactivate or activate the LiteSpeed Cache plugin it adds or removes the WP_CACHE constant code in the wp-config.php file. If you are using the Browser cache option in the LiteSpeed Cache plugin then htaccess code will be added and removed on plugin deactivation or activation. Do the steps below to take care of this issue.
1. Delete the wp-config.php file and root htaccess file in Quarantine.
2. Go to the BPS Pro Setup Wizard page.
3. Run the Pre-Installation Wizard and Setup Wizard.
Note: The Setup Wizard has a feature called AutoFix, which will automatically add or remove the WP_CACHE constant code in the wp-config.php file and add or remove LiteSpeed Cache htaccess code in your root htaccess file and BPS Custom Code.