PHP Warning: Undefined array-key

[WillBrubaker]

Describe the bug

6030831-zen

I'm getting this warning over and over again on my staging site where I was testing my woocommerce updates

[08-Mar-2023 10:20:22 UTC] PHP Warning: Undefined array key "order-received" in /home/dfwcrafts/staging.dfwcrafts.com/wp-content/plugins/woocommerce-subscriptions/vendor/woocommerce/subscriptions-core/includes/gateways/paypal/class-wcs-paypal.php on line 516
[08-Mar-2023 19:31:28 UTC] PHP Warning: Undefined array key "order-received" in /home/dfwcrafts/staging.dfwcrafts.com/wp-content/plugins/woocommerce-subscriptions/vendor/woocommerce/subscriptions-core/includes/gateways/paypal/class-wcs-paypal.php on line 516
[08-Mar-2023 19:39:38 UTC] PHP Warning: Undefined array key "order-received" in /home/dfwcrafts/staging.dfwcrafts.com/wp-content/plugins/woocommerce-subscriptions/vendor/woocommerce/subscriptions-core/includes/gateways/paypal/class-wcs-paypal.php on line 516

To Reproduce

1. Apparently, test WooCommerce updates when Subscriptions is active

Expected behavior

A clean error log

Actual behavior

PHP warnings

Product impact

• [x] Does this issue affect WooCommerce Subscriptions? yes/no/tbc, add issue ref
• [ ] Does this issue affect WooCommerce Payments? yes/no/tbc, add issue ref

Additional context

[fevered]

Also seeing this in 6069244-zen

[Optrec]

I am getting the same error too. I am making payments from my customer account to test the payment functionality. It was working weeks ago, but when I was doing further tests, the error ''Warning: Undefined array key "order-received" in /home/customer/www/websitename/public_html/wp-content/plugins/woocommerce-payments/vendor/woocommerce/subscriptions-core/includes/gateways/paypal/class-wcs-paypal.php on line 516'' shows and I cannot click on the order section from the dashboard. Can you do something about this to get it fixed as this is affecting my time and business.

[jacoswan]

Also in 6246168-zen

2023/04/29 06:27:29 [error] 93817#93817: *20436 
FastCGI sent in stderr: "PHP message: PHP Warning: Undefined array key "order-received" in
 /www/REDACTED/public/wp-content/plugins/woocommerce-subscriptions/vendor/woocommerce/subscriptions-core/includes/gateways/paypal/class-wcs-paypal.php on line 516"
  while reading response header from upstream, 
  server:REDACTED, 
  request: "GET /kasse/order-received/5003 HTTP/1.1",
  upstream: "fastcgi://unix:/var/run/php8.0-fpm-inoivch.sock:", 
  host: "REDACTED:14233"