Hey there, I am newbie blogger and i just love learning things by doing them first. This way I have enabled canonical URLs in the admin dashboard, but from the next moment, i am not able to open the website.

I am seeing the error message
Whoops \ Exception \ ErrorException (E_WARNING)
ini_set(): Headers already sent. You cannot change the session module's ini settings at this time

I have set back the 'canonical_url'http://myloweslife.xyz/ setting via the application / config / site.php but the error keeps showing and it is not allowing me to do anything.

Is there any method to reverse the changes that i have made on my site, so that it can start working back again.