wrong content encoding/decoding or problem with gzip encoded content about php-proxy HOT 3 CLOSED

I need to know the exact page where this happens. That register.gotowebminar... URL throws 404 not found error for me.

from php-proxy.

Then use only https://register.gotowebinar.com as url

from php-proxy.

It appears to me that this problem is unique to gotowebinar.com because it refuses to serve plain-text even if you explicitly ask for it.
An easy fix for that is to just tell cURL to always request and deal with GZIP type responses. You can do that by adding this option to your php-proxy's config.php file:

$config['curl'] = array(
	CURLOPT_ENCODING => 'gzip'
);

from php-proxy.