Undefined constant error in BLIK payment processing

[bpetrynski]

Description

The plugin throws a critical error during BLIK payment processing due to an undefined constant WP_TPAY_BLIK_PREFIX. This occurs when attempting to process payments using the BLIK payment method.

Error Details

Uncaught Error: Undefined constant "Tpay\Helpers\WP_TPAY_BLIK_PREFIX" in /wp-content/plugins/tpay-woocommerce/includes/Helpers/GatewayHelper.php:94

Environment

• WordPress version: 6.7.1
• WooCommerce version: 9.6.1
• Tpay WooCommerce plugin version: 1.7.15
• Tpay OpenAPI PHP version: 1.8.0
• PHP version: 8.3.16

Stack Trace

#0 .../includes/TpayBlik.php(237): Tpay\Helpers\GatewayHelper->user_blik_status()
#1 .../includes/TpayBlik.php(188): Tpay\TpayBlik->init_blik_user_info()
#2 .../includes/TpayBlik.php(79): Tpay\TpayBlik->additional_payment_data()
#3 .../includes/class-wc-checkout.php(1083): Tpay\TpayBlik->process_payment(...)

Steps to Reproduce

1. Add items to cart
2. Proceed to checkout
3. Select BLIK as payment method
4. Attempt to complete the order

Expected Behavior

The payment process should proceed without errors and create a BLIK transaction.

Actual Behavior

The checkout process fails with a critical error due to the undefined constant. The error appears consistently across multiple payment attempts.

Additional Context

• API communication with Tpay servers is successful (HTTP 200 responses)
• The error occurs specifically during the BLIK payment status check
• Multiple customers have encountered this issue
• Logs show successful API communication before the error occurs

Impact

This issue blocks all BLIK payment processing, affecting customer checkout completion.

[kwojc]

We will try to reproduce issue soon.