An error has occured, Please select another payment method

[MagentoGuysProjects]

We are using the module version v4.3.0 on our live site which is working perfectly fine. but when we try to upgrade module to latest version it is giving error message "An error has occured, Please select another payment method" when we check logs of checkout.com we get ["The API response status code (401) does not indicate success."] []"

Checkout Logging: {"quote_id":"179454","store_id":1,"customer_email":"[email protected]"} []
[2023-11-01T06:25:16.112979+00:00] main.DEBUG: Checkout Logging: {"source":{"type":"token","token":"tok_qs7gdjzj4xhunoxmhujdkpmhza","billing_address":{"address_line1":"14 Stanley Terrace","address_line2":"","city":"Great Yarmouth","state":"Norfolk","zip":"NR30 2EG","country":"GB"},"phone":null,"store_for_future_use":null},"amount":795,"currency":"GBP","payment_type":"Regular","merchant_initiated":null,"reference":"1000172514","description":"Payment request from Plum Play","authorization_type":null,"capture":true,"capture_on":"2023-11-01T06:26:28Z","customer":{"id":null,"email":"[email protected]","name":"David Potts","phone":null},"billing_descriptor":null,"shipping":{"address":{"address_line1":"14 Stanley Terrace","address_line2":"","city":"Great Yarmouth","state":"Norfolk","zip":"NR30 2EG","country":"GB"},"phone":null,"from_address_zip":null},"three_ds":{"enabled":true,"attempt_n3d":false,"eci":null,"cryptogram":null,"xid":null,"version":null,"exemption":null,"challenge_indicator":null,"allow_upgrade":null,"status":null,"authentication_date":null,"authentication_amount":null,"flow_type":null,"status_reason_code":null,"challenge_cancel_reason":null,"score":null,"cryptogram_algorithm":null,"authentication_id":null},"processing_channel_id":"pc_w6zvjrlyzi3ebfm3r4me2bddrm","previous_payment_id":null,"risk":null,"success_url":"https://www.plumplay.co.uk/checkout_com/payment/verify","failure_url":"https://www.plumplay.co.uk/checkout_com/payment/fail","payment_ip":null,"sender":null,"recipient":null,"marketplace":null,"amount_allocations":null,"processing":null,"metadata":{"methodId":"checkoutcom_card_payment","quoteData":"{\"quote_id\":\"179454\",\"store_id\":1,\"customer_email\":\"[email protected]\"}","udf5":"{\"server_url\":\"https:\\/\\/www.plumplay.co.uk\\/\",\"sdk_data\":\"PHP v8.1.24, SDK v3.0.6","integration_data":"Checkout.com Magento 2 Module v5.5.0","platform_data":"Magento 2.4.6-p3"}"},"items":null} []

Can anyone help us to gett this issue fixed as soon as possible?