dbltoe:
1.5.8 with PHP 8
BootStrap 3.5.0 -- IMPORTANT
Updating OPC to 2.4.7
Part of the OPC distro includes/modules/sideboxes/YOUR_TEMPLATE/information.php. It is said to not be a core file replacement. This seems to be false if the store is using bootstrap or a bootstrap clone.
If you clone bootstrap to, say, boot_dbltoe it then essentially becomes the "YOUR_TEMPLATE" folder for 1.5.8 running bootstrap.
The directions state to rename the OPC YOUR_TEMPLATE files to whatever your current template is called which would result in the provided OPC file to be renamed to includes/modules/sideboxes/boot_dbltoe/information.php.
When that file is loaded to the store, the original bootstrap information.php is overwritten by the OPC and the following log file occurs along with a partial blank page.
[27-Dec-2022 13:08:33 America/Denver] Request URI: /index.php?main_page=down_for_maintenance, IP address: 255.255.255.255, Language id 1#1 require(/includes/templates/boot_dbltoe/sideboxes/tpl_information.php) called at [/includes/modules/sideboxes/boot_dbltoe/information.php:56]
#2 require(/includes/modules/sideboxes/boot_dbltoe/information.php) called at [/includes/templates/boot_dbltoe/common/tpl_offcanvas_menu.php:97]
#3 require(/includes/templates/boot_dbltoe/common/tpl_offcanvas_menu.php) called at [/includes/templates/boot_dbltoe/common/tpl_header.php:77]
#4 require(/includes/templates/boot_dbltoe/common/tpl_header.php) called at [/includes/templates/boot_dbltoe/common/tpl_main_page.php:125]
#5 require(/includes/templates/boot_dbltoe/common/tpl_main_page.php) called at [/index.php:94]
--> PHP Warning: Undefined variable $box_id in /includes/templates/boot_dbltoe/sideboxes/tpl_information.php on line 12.
[27-Dec-2022 13:08:33 America/Denver] Request URI: /index.php?main_page=down_for_maintenance, IP address: 255.255.255.255, Language id 1
#1 require(/includes/modules/sideboxes/boot_dbltoe/information.php) called at [/includes/templates/boot_dbltoe/common/tpl_offcanvas_menu.php:97]
#2 require(/includes/templates/boot_dbltoe/common/tpl_offcanvas_menu.php) called at [/includes/templates/boot_dbltoe/common/tpl_header.php:77]
#3 require(/includes/templates/boot_dbltoe/common/tpl_header.php) called at [/includes/templates/boot_dbltoe/common/tpl_main_page.php:125]
#4 require(/includes/templates/boot_dbltoe/common/tpl_main_page.php) called at [/index.php:94]
--> PHP Warning: Undefined variable $column_box_default in /includes/modules/sideboxes/boot_dbltoe/information.php on line 61.
[27-Dec-2022 13:08:33 America/Denver] Request URI: /index.php?main_page=down_for_maintenance, IP address: 255.255.255.255, Language id 1
#1 require(/includes/modules/sideboxes/boot_dbltoe/information.php) called at [/includes/templates/boot_dbltoe/common/tpl_offcanvas_menu.php:97]
#2 require(/includes/templates/boot_dbltoe/common/tpl_offcanvas_menu.php) called at [/includes/templates/boot_dbltoe/common/tpl_header.php:77]
#3 require(/includes/templates/boot_dbltoe/common/tpl_header.php) called at [/includes/templates/boot_dbltoe/common/tpl_main_page.php:125]
#4 require(/includes/templates/boot_dbltoe/common/tpl_main_page.php) called at [/index.php:94]
--> PHP Warning: Undefined variable $column_box_default in /includes/modules/sideboxes/boot_dbltoe/information.php on line 61.
[27-Dec-2022 13:08:33 America/Denver] Request URI: /index.php?main_page=down_for_maintenance, IP address: 255.255.255.255, Language id 1
#1 require() called at [/includes/modules/sideboxes/boot_dbltoe/information.php:61]
#2 require(/includes/modules/sideboxes/boot_dbltoe/information.php) called at [/includes/templates/boot_dbltoe/common/tpl_offcanvas_menu.php:97]
#3 require(/includes/templates/boot_dbltoe/common/tpl_offcanvas_menu.php) called at [/includes/templates/boot_dbltoe/common/tpl_header.php:77]
#4 require(/includes/templates/boot_dbltoe/common/tpl_header.php) called at [/includes/templates/boot_dbltoe/common/tpl_main_page.php:125]
#5 require(/includes/templates/boot_dbltoe/common/tpl_main_page.php) called at [/index.php:94]
--> PHP Warning: require(/includes/templates/boot_dbltoe/common): Failed to open stream: No such file or directory in /includes/modules/sideboxes/boot_dbltoe/information.php on line 61.
[27-Dec-2022 13:08:33 America/Denver] PHP Fatal error: Uncaught Error: Failed opening required 'includes/templates/boot_dbltoe/common/' (include_path='.:/opt/cpanel/ea-php80/root/usr/share/pear') in /includes/modules/sideboxes/boot_dbltoe/information.php:61
Stack trace:
#0 /includes/templates/boot_dbltoe/common/tpl_offcanvas_menu.php(97): require()
#1 /includes/templates/boot_dbltoe/common/tpl_header.php(77): require('/home/hornkati/...')
#2 /includes/templates/boot_dbltoe/common/tpl_main_page.php(125): require('/home/hornkati/...')
#3 /index.php(94): require('/home/hornkati/...')
#4 {main}
thrown in /includes/modules/sideboxes/boot_dbltoe/information.php on line 61
[27-Dec-2022 13:08:33 America/Denver] Request URI: /index.php?main_page=down_for_maintenance, IP address: 255.255.255.255
--> PHP Fatal error: Uncaught Error: Failed opening required 'includes/templates/boot_dbltoe/common/' (include_path='.:/opt/cpanel/ea-php80/root/usr/share/pear') in /includes/modules/sideboxes/boot_dbltoe/information.php:61
Stack trace:
#0 /includes/templates/boot_dbltoe/common/tpl_offcanvas_menu.php(97): require()
#1 /includes/templates/boot_dbltoe/common/tpl_header.php(77): require('/home/hornkati/...')
#2 /includes/templates/boot_dbltoe/common/tpl_main_page.php(125): require('/home/hornkati/...')
#3 /index.php(94): require('/home/hornkati/...')
#4 {main}
thrown in /includes/modules/sideboxes/boot_dbltoe/information.php on line 61.
>
> Replacing the OPC information.php file with the original from bootstrap 3.5.0 restores operation to the store.
>
> Had this same problem before but was not able to replicate cause and effect till this time.
Thanks, @dbltoe. I'll get the OPC installation instructions updated to note that the Bootstrap template (v2.4.0 and later) already has the required template files for that sidebox.