[SOLVED] CBConnect/ Login Error: CB login by facebook account goes to Blank page

Hello, thank you for your support.

Recently I have received Error report for CB login using facebook/CB Connect from my users. They are saying they cannot login.

I confirmed this error happening in iPhone device by myself;

1. Click facebook login button in my cb login page when I am already log in to facebook.
2. New page open and the page is blank. blank page url is
https://[mydomain]/index.php?option=com_comprofiler&task=pluginclass&plugin=cbconnect&action=facebook&func=accesstoken&format=raw&code=AQCNZR8kGQ1n-Mq-Gqlc6qCWi6cQXWrg9KPEAtj9jb8_e8mIthN9G5hPDvJ9R52mI6u1lGMLbyVWmnk2R5BqAMJ0j5aCH-2cPpnKtFKDB83eIPN0PNGPT9xmWNQTIvrWAOBaCyKzQizS3jlB2iK0z1QlGJFVT8X99XMD7a24cl2oCYZ8sKRLqWMucGjCkh3yrhrFCxx7KeUzKop-4JqufGN8ozEzYjifBdgvbtVItp7dvq4uxEnU5-UZN_EaHsehyc6OkA8YhjhTiKfRyfpiqVgW7eoz8qYTxH8r_i0aWUlvrKOwQZtkDrsfjJGtyfuaqoMbGZiPcvhChhMavG6temsK&state=a99af8671f6aa8f3fffec7f32c65cac0#_=_


The blank page is totally blank with no message. I tried to check debug in blank page by maximum bug report, but nothing was displayed.

I also tried this in windows and mac PC, and both worked, but in android device, error occurred; Click facebook login button then blank pop-up showed and quickly closed, then nothing happened.

My main environment is below;

device: iPhone6
OS: iOS8
browser: safari
Joomla: 1.5.15
CB: 1.9.1
CB Connect: 5.2.2

Could you advise what was wrong and how to fix this?

Thank you!

It's bugged, you need the latest CB Connect which is for CB 2.0. Alternative is search around the forums for some quick fixes as that could be the username error. Enable debug mode and maximum error reporting then retest to expose the error.

Thank you for your reply.

I use joomla 1.5, so I cannot upgrade to CB 2.0 for now so now I want to use alternative way to fix this problem.

For debug there is no message shown even in maximum error report as I told, just blank.

I found the forum you mentioned, www.joomlapolis.com/forum/search?q=CB+connect+username+error&childforums=1

I fixed the "username" code, but error still exists. I actually found another thing which seems to be cause of this error;

1 Click Facebook login by iPhone device

2 Opening blank page

3 The blank page NOT CLOSE

4 If I close the page by myself, login will work after that.

I think "blank page not close by itself" issue cause this login error. Do you have any advise for this.


Thank you always for your support.


--edit--

I found more detail about this. From IOS8.x JS, "window.close()" does not work.

stackoverflow.com/questions/25804730/window-close-doesnt-work-on-ios-8-gm-seed

in

there is code using "window.close();" in cbconnect.class.php, line 1914;

Have you modify this in latest update? if so could you advise me how to fix?

Thank you!

The popup method doesn't work on mobile devices. Try setting the method to redirect within CB Connect settings. The CB Connect release for CB 2.0 always uses redirect method.

That is it!
The issue solved by changing to "redirect".

Thank you for your sincere advise!

Best!