The Certificate Page shows nothing

Hey there,

Are you referring to the “View Certificate” link from the “My Courses” page as a student would see the page?

If so is it that you’re viewing a blank screen? Can you view the certificate by editing it as an admin?

Is this a course that you configured a long time ago or was it a course you’ve recently created.

Thanks,

Hi thomasplevy,

Yes, I am referring to the “View Certificate” link from the “My Courses” page as a student.

When I click on it, it opens a new window with a blank screen. Even as an admin I am not able to view or preview the certificate.

I created this course couple of weeks back. It is locally hosted site within our office network.

Thanks,

Hey Shamit,

It sounds like it could be a PHP error if you are seeing a completely blank screen. Can you check out our guide for debugging white screens and php errors at https://lifterlms.com/docs/how-to-debug-a-white-screen/ and post your results. It would also be helpful if you could post your LifterLMS System report (https://lifterlms.com/docs/how-to-use-the-lifterlms-system-report/).

Also please ensure you’re on the latest version of LifterLMS (v2.2.1) as we’ve recently released some improvements to our Certificates. Details of the certificate related data are available at https://blog.lifterlms.com/whats-new-lifterlms-2-2-0/ if you haven’t already updated.

Sorry I can’t be more helpful without some clear error messages. I’m fairly blind and I can’t recreate a certificate issue like this locally.

Thanks Thomas Plevy,

I’ll go through the provided documents and will post my results before closing this thread/topic.

Here is the system report if this is helpful.

‘WordPress Environment

Home URL: https://172.16.48.6/hub
Site URL: https://172.16.48.6/hub
LifterLMS Version: 2.2.1
Wordpress Version: 4.4.2
Wordpress Multisite: –
Wordpress Memory Limit: 256 MB
Wordpress Debug Mode: –
Wordpress Language: en_US

Server Environment

Server Info: Apache/2.4.9 (Win32) PHP/5.5.12
PHP Version: 5.5.12
PHP Max Post Size: 1,010 MB
Max Upload Size: 1,000 MB
PHP Time Limit: 40000000
PHP Max Input Vars: 2500
Default Timezone is UTC:
MySQL Version: 5.6.17
GZip:
DOMDocument:
SoapClient:
fsockopen/cURL:
Multibyte String:

Active Plugins

Black Studio TinyMCE Widget: by Black Studio – 2.2.8
Custom DataBase Tables: by ka2 – 2.0.7
Duplicator: by LifeInTheGrid – 1.1.4
LifterLMS: by Mark Nelson, Thomas Patrick Levy, codeBOX, LLC – 2.2.1
Login Widget With Shortcode: by avimegladon – 5.2.3
Popup Builder: by Sygnoos – 2.2.0
Page Builder by SiteOrigin: by SiteOrigin – 2.3.1
SiteOrigin Widgets Bundle: by SiteOrigin – 1.5.9
TablePress: by Tobias B?thge – 1.7
Tesla Login Customizer: by TeslaThemes – 1.2.4
WordPress Importer: by wordpressdotorg – 0.6.1
WP Business Intelligence Lite: by WP Business Intelligence – 1.6.7

LifterLMS Settings

Currency: USD
Auto-Advance Lesson: yes
Redirect Members to Checkout: no
Display Student Memberships on Account Page: no
Enable Paypal: no
Enable Sandbox Mode: no
Enable Debug Mode:
Enable BuddyPress: no
Enable WooCommerce: no

LifterLMS Pages

Courses: Courses
Memberships:Page not set
My Account:Page not set
Checkout:Page not set

Current Theme

Theme: Astrid
Theme Version: 1.01
Child Theme: ?’

Hey Shambit,

I’m going to wait on attempting any further reproduction until you can provide an error message to accompany your white screen.

Thanks for this information so far as it will be useful in the ultimate resolution but I really still do need an error message!

Thanks,

Hello!

I have the same problem ??

WordPress Environment

Home URL: https://profimarkets.com
Site URL: https://profimarkets.com
LifterLMS Version: 2.2.1
Wordpress Version: 4.4.2
Wordpress Multisite: –
Wordpress Memory Limit: 512 MB
Wordpress Debug Mode: –
Wordpress Language: ru_RU

Server Environment

Server Info: nginx/1.6.2
PHP Version: 5.6.15
PHP Max Post Size: 8 MB
Max Upload Size: 8 MB
PHP Time Limit: 300
PHP Max Input Vars: 1000
Default Timezone is UTC:
MySQL Version: 5.1.73
GZip:
DOMDocument:
SoapClient: ?
fsockopen/cURL:
Multibyte String:

Active Plugins

Ultimate Addons for Visual Composer: by Brainstorm Force – 3.15.2
Anti-spam: by webvitaly – 4.2
Comet Cache: by WebSharks, Inc. – 160227 – Network enabled
Contact Form 7: by Takayuki Miyoshi – 4.4
WPBakery Visual Composer: by Michael M – WPBakery.com – 4.10
LifterLMS: by Mark Nelson, Thomas Patrick Levy, codeBOX, LLC – 2.2.1
Nav Menu Roles: by Kathy Darling – 1.7.9
Post Types Order: by Nsp Code – 1.8.6
Простой SSL: by Rogier Lankhorst – 2.2.20
Redirection: by John Godley – 2.4.3
Slider Revolution: by ThemePunch – 5.1.6
RusToLat: by Anton Skorobogatov– 0.3
Optimize Database after Deleting Revisions: by CAGE Web Design | Rolf van Gelder, Eindhoven, The Netherlands – 4.1.4 – Network enabled
Woo Checkout Field Editor Pro: by ThemeHiGH – 1.0.9
WooCommerce: by WooThemes – 2.5.4
Yoast SEO: by Команда Yoast – 3.1.1
YaBlog: by Антон Парамонов – 1.6.5
yandexmoney_wp_woocommerce: by Yandex.Money – 2.2.2

LifterLMS Settings

Currency: RUB
Auto-Advance Lesson: yes
Redirect Members to Checkout: yes
Display Student Memberships on Account Page: yes
Enable Paypal: no
Enable Sandbox Mode: no
Enable Debug Mode:
Enable BuddyPress: no
Enable WooCommerce: yes

LifterLMS Pages

Courses:Page not set
Memberships:Page not set
My Account: My Account
Checkout: Checkout

Current Theme

Theme: Impreza
Theme Version: 2.9
Child Theme: ?

So, I checked your link https://lifterlms.com/docs/how-to-debug-a-white-screen/

And did what was advised to get a debug report. My question – “Where will I see that debug error?” Any help would be great !!

Is it possible that my theme is blocking it? I am using Astrid by athemes.

Hey there shamibthardwaj,

I’ve determined that the issue you’re experiencing has to do with your theme’s “preloader” functionality. It masks our certificate content. The certificate content is there but it’s hidden behind the preloader.

I figured out how to resolve this via LifterLMS but it requires updating several files and I need to thoroughly test the issue before I can release a solution that doesn’t simultaneously break functionality across other themes.

That said, if you can add the following to a custom css file (try https://www.ads-software.com/plugins/simple-custom-css/ plugin if you don’t have a CSS area already or you don’t know how to add custom css via a child theme) you should be able to get your certificates working today. When we release a better fix in the next few days you can remove the CSS.

single-llms_certificate .preloader,
.single-llms_my_certificate .preloader { display: none !important; }

Hey kellerpt,

This is no doubt a theme conflict. However in order to resolve theme compatibility issues with premium (paid) WordPress themes we require users to submit feature requests via our feature request form at https://lifterlms.com/contact. Please submit a feature request and provide a link to this thread and we’ll get the feature prioritized as soon as possible.

Thanks,

Hi Thomas Plevy,

Sorry for my late response was away for couple of days.

Thanks for your support. You’ve been a great help and yes the solution of adding custom CSS did work. ??

Sincerely,
Shamit

Great to hear! Let us know if you need any additional help!