Issue with order totals in 1.5.8

[MikeyG]

Posting here at the suggestion of Lat9 as perhaps it was not the Bootstrap or the onePage Check out being the issue but something else in 1.5.8.

Although when I installed 1.5.8 on its own it seems to be okay and it is only after the one page check out going in that I go the issue. Perhaps someone can help rather than me putting it in either of the other plug in threads.

My Original post is:

Just trying to install OPCO with the Bootstrap template using zc1.5.8. - clean install on local server to test. have uploaded as well the boostrap template for opco.

the error I get is

[21-Oct-2022 12:07:50 UTC] PHP Fatal error: Uncaught Error: Undefined constant "MODULE_ORDER_TOTAL_COUPON_HEADER" in .\includes\modules\order_total\ot_coupon.php:105
Stack trace:
#0 .admin\modules.php(187): ot_coupon->__construct()
#1 .admin\index.php(11): require('C:\\Users\\...\\...')
#2 {main}
thrown in .\includes\modules\order_total\ot_coupon.php on line 105

[21-Oct-2022 12:07:50 UTC] Request URI: .admin/index.php?cmd=modules&set=ordertotal, IP address: ::1
--> PHP Fatal error: Uncaught Error: Undefined constant "MODULE_ORDER_TOTAL_COUPON_HEADER" in .\includes\modules\order_total\ot_coupon.php:105
Stack trace:
#0 .admin\modules.php(187): ot_coupon->__construct()
#1 .admin\index.php(11): require('C:\\Users\\...\\...')
#2 {main}
thrown in .\includes\modules\order_total\ot_coupon.php on line 105.


I can see the define is in the language file, I am not sure how to interpret the rest of this log to help fund or understand the problem. - sorry bit of a novice when it comes to coding.

I have also noticed that in admin \modules\order totals I only have one and the rest of the page does not load suggesting an error somewhere that prevents the admin page loading. Again, sorry but I just not sure where to look to see what is causing the error.

Thanks

[lat9]

Did you, perhaps, overwrite

/includes/languages/english/modules/order_total/lang.ot_coupon.php

with the version supplied by OPC in its

/includes/languages/english/modules/order_total/YOUR_TEMPLATE/lang.ot_coupon.php?

That might explain the issue's cause, since the OPC version is a subset of the base Zen Cart's version of the file and is expected to be copied/merged with your active template's override of that 'core' module.

[brittainmark]

See above.

[swguy]

The only way I can dup this is to accidentally install the OPC override

includes/languages/english/modules/order_total/YOUR_TEMPLATE/lang.ot_coupon.php

in the upper level (non override) folder

includes/languages/english/modules/order_total/

(Note: This is what Cindy said too - I can't dup it any other way.)