I'm having a problem with this on a client site using authorize.net.

Zen Cart 1.5.5e
One-Page 2.3.2

When using a.net and clicking checkout I get the spinning circle and then the page reloads and I'm still in checkout. Checking the error logs, I see the error below. Oddly, that is not my ip address.

Here's what I think is going on. I installed and tested the plugin on a development site. But not with authorize.net. This is new now that Payeezy stopped working. When I made the dev site live, I copied the customer tables from the live site to the dev site. This of course wiped out the changes one-page does upon installation so I ran:
ALTER TABLE `orders` ADD COLUMN `is_guest_order` tinyint(1) NOT NULL DEFAULT '0';

Is there something else I should have done to ensure this will work when moving from dev to live? I did search the thread thinking this may have been covered but was unable to find an answer.

[10-Jun-2020 16:25:41 America/New_York] Request URI: /ADMIN/customers.php?page=1&cID=11098, IP address: 208.123.180.13
#1 array_merge() called at [/home2/austrao6/public_html/ADMIN/customers.php:1184]

[10-Jun-2020 16:25:41 America/New_York] PHP Warning: array_merge(): Argument #1 is not an array in /home2/austrao6/public_html/Du1262Mj/customers.php on line 1184
[10-Jun-2020 16:25:41 America/New_York] Request URI: /ADMIN/customers.php?page=1&cID=11098, IP address: 208.123.180.13
#1 array_merge() called at [/home2/austrao6/public_html/ADMIN/customers.php:1186]

[10-Jun-2020 16:25:41 America/New_York] PHP Warning: array_merge(): Argument #2 is not an array in /home2/austrao6/public_html/ADMIN/customers.php on line 1186