One-Page Checkout [Support Thread]

[swguy]

[01-Aug-2025 03:07:38 America/Chicago] PHP Fatal error: Uncaught Error: Call to a member function guestCheckoutEnabled() on int in /home/client/public_html/includes/classes/observers/class.checkout_one_observer.php:216
Stack trace:
#0 /home/client/public_html/includes/autoload_func.php(64): checkout_one_observer->messageCheck()
#1 /home/client/public_html/includes/application_top.php(329): require('/home/client/...')
#2 /home/client/public_html/index.php(25): require('/home/client/...')
#3 {main}
thrown in /home/client/public_html/includes/classes/observers/class.checkout_one_observer.php on line 216

[lat9]

v2.5.5 of One-Page Checkout is now available for download: https://www.zen-cart.com/downloads.php?do=file&id=2095

This release contains changes associated with these GitHub issues:

#425: Disregard shipping modules/methods with no 'id'
#428: Passing E_USER_ERROR to trigger_error() is deprecated
#431: Corrections needed for shipping modules with 'extra' fields
#432: AJAX: Conditionally load order-related classes
#435: 'state_code' address element not created for temporary address updates
#440: Correct product tax display on shipping change
#441: Disallow guest-checkout if email_address is registered but not authorized
#442: Remove overrides now present in zc158 and later

[nicksab]

is it normal for OPC to be display has on column on responsive template?

When combine with the bootstrap template, OPC is display in several columns.

I am not able to add screenshot somehow but:

OPC on bootstrap is like

column 1 column 2 column 3

billing info cart content other
shipping info comment box


OPC on responsive is one column only

billing info
shipping info
comment
cart content

How can i get the 3 column on responsive classic template?

Thank you

[lat9]

is it normal for OPC to be display has on column on responsive template?

When combine with the bootstrap template, OPC is display in several columns.

I am not able to add screenshot somehow but:

OPC on bootstrap is like

column 1 column 2 column 3

billing info cart content other
shipping info comment box


OPC on responsive is one column only

billing info
shipping info
comment
cart content

How can i get the 3 column on responsive classic template?

Thank you

OPC provides a checkout_one.css file in its distribution's /includes/templates/YOUR_TEMPLATE directory. Did you copy that .css file to your responsive_classic clone's template directory?

Note that the file should not be copied for the Bootstrap template and its clones.

[nicksab]

OPC provides a checkout_one.css file in its distribution's /includes/templates/YOUR_TEMPLATE directory. Did you copy that .css file to your responsive_classic clone's template directory?

Note that the file should not be copied for the Bootstrap template and its clones.

The file is there and I am using the latest version of OPC 2.5.5

I am still getting error when trying to attach images so maybe these dropbox link would work better.

Here is the website using Bootstrap Template with OPC

https://www.dropbox.com/scl/fi/vv180...=3zt2azxo&dl=0

Here is the site with Responsive Template and OPC Checkout

https://www.dropbox.com/scl/fi/ml3p9...=ufd3t1ju&dl=0

Same site Responsive Template with classic checkout

https://www.dropbox.com/scl/fi/3p0di...=0jyjlhht&dl=0

[lat9]

That screenshot of Bootstrap with OPC doesn't look like the as-shipped version and the screenshot with responsive_classic is too teeny to make out.

Noting, too, that debugging CSS issues via screenshots is pretty "impossible".

[nicksab]

That screenshot of Bootstrap with OPC doesn't look like the as-shipped version and the screenshot with responsive_classic is too teeny to make out.

Noting, too, that debugging CSS issues via screenshots is pretty "impossible".

sorry forgot to add the link to site with issues

https://www.royal-fleur.com/belvedere/

[brittainmark]

[01-Aug-2025 03:07:38 America/Chicago] PHP Fatal error: Uncaught Error: Call to a member function guestCheckoutEnabled() on int in /home/client/public_html/includes/classes/observers/class.checkout_one_observer.php:216
Stack trace:
#0 /home/client/public_html/includes/autoload_func.php(64): checkout_one_observer->messageCheck()
#1 /home/client/public_html/includes/application_top.php(329): require('/home/client/...')
#2 /home/client/public_html/index.php(25): require('/home/client/...')
#3 {main}
thrown in /home/client/public_html/includes/classes/observers/class.checkout_one_observer.php on line 216

Was a solution/reason found for this I have had it ocour 96 times last month but I cannot recreate it on my test system.
Zen cart 2.1 opc 2.5.5 (2025-09-19) php 8.3.27

[swguy]

I am getting a number of these:

[22-Dec-2025 16:41:45 America/New_York] Request URI: /index.php?main_page=checkout_process, IP address: *.*.*.*, Language id 1
#0 /home/client/public_html/includes/modules/checkout_process.php(45): zen_debug_error_handler()
#1 /home/client/public_html/includes/modules/pages/checkout_process/header_php.php(13): require('/home/client/...')
#2 /home/client/public_html/index.php(35): require('/home/client/...')
--> PHP Warning: Undefined array key "payment" in /home/client/public_html/includes/modules/checkout_process.php on line 45.

Bootstrap 3.7.8, OPC 2.5.5, Zen Cart 2.1.0, PHP 8.3.

[Carbonless]

I have One Page Checkout 2.5.5 , recently upgraded to ZC 2.1.0, using ZCA Bootstrap-4, and Square Web Payments Module 1.0.2. With OPC turned off, I can checkout using Square Web Pay mod just fine. Turn OPC on and When I get to the cc entry and click "Review Order" I get this notification: We have a problem on our end. So Sorry! Please report this error to the Store Owner: SQ-MISSING-TOKEN

And it generates this error log: [23-Jan-2026 03:55:46 UTC] PHP Notice: missing token result: check if card button is disabled on dev console using: document.getElementById('card-button'); else look for javascript error in console. in /includes/modules/payment/square_webPay.php on line 262

Outside of my knowhow. Any help is greatly appreciated as always.