Pressing the ‘Pay for Invoice’ button from an invoice page results in a blank page and a 503 error in the log.
Paypal Standard (Sandbox mode) is configured in the admin:
For invoice url: https://portal.theassociationpartner.net/wpi_invoice/inv-1199/
The invoice displays correctly. Pressing the ‘Pay for Invoice’ button redirects to: https://portal.theassociationpartner.net/wpi-checkout/?wpi_action=pay_for_invoice&invoice_key=79777523ea65efe8d5eef12b8b0d9318 which displays as a blank page with a 503 error. Note that this happens regardless of the Payment Gateway selected (tried PayPal & Test Payment).
Removing the invoice_key parameter from the url after receiving the blank page results in the checkout page being displayed. The error ‘Error: You are not allowed to view this invoice’ appears above the ‘Proceed to PayPal’ button.
The ‘Proceed to PayPal’ button redirects to PayPal correctly.
PaoloSite AdminPost count: 31204
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There was an issue from hosting server-side on that ticket and it can be also possible on your site. Can you please provide FTP details in a private reply so that I can enable and check the error log?
PatrikThis reply has been marked as private.
It looks like W3 total cache is causing an issue. When I disabled it then I don’t see the issue. It may be possible the resources used by W3 total cache are increased or maybe some other issue which exactly you can get from your hosting provider as I don’t see any logs in the WP directory so it might be on the hosting server-side. I have disabled the W3 total cache for now so you can check from your side. If you want to use any other caching plugin then you can use otherwise try to find the exact issue from the hosting provider and let us know so that we can provide you the solution for the same.
Disabling the W3 total cache plugin did the trick. Thank you for your quick response.
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