[28-Jan-2026 16:41:25 UTC] PHP Fatal error:  Uncaught Error: Interface 'kamermans\OAuth2\Signer\ClientCredentials\SignerInterface' not found in /home/whizzmailer/public_html/swiss-belhotel-v2/vendor/kamermans/guzzle-oauth2-subscriber/src/Signer/ClientCredentials/PostFormData.php:8
Stack trace:
#0 {main}
  thrown in /home/whizzmailer/public_html/swiss-belhotel-v2/vendor/kamermans/guzzle-oauth2-subscriber/src/Signer/ClientCredentials/PostFormData.php on line 8
[28-Jan-2026 16:42:06 UTC] PHP Fatal error:  Uncaught Error: Interface 'kamermans\OAuth2\Signer\ClientCredentials\SignerInterface' not found in /home/whizzmailer/public_html/swiss-belhotel-v2/vendor/kamermans/guzzle-oauth2-subscriber/src/Signer/ClientCredentials/BasicAuth.php:7
Stack trace:
#0 {main}
  thrown in /home/whizzmailer/public_html/swiss-belhotel-v2/vendor/kamermans/guzzle-oauth2-subscriber/src/Signer/ClientCredentials/BasicAuth.php on line 7
[28-Jan-2026 16:42:55 UTC] PHP Fatal error:  Uncaught Error: Interface 'kamermans\OAuth2\Signer\ClientCredentials\SignerInterface' not found in /home/whizzmailer/public_html/swiss-belhotel-v2/vendor/kamermans/guzzle-oauth2-subscriber/src/Signer/ClientCredentials/Json.php:8
Stack trace:
#0 {main}
  thrown in /home/whizzmailer/public_html/swiss-belhotel-v2/vendor/kamermans/guzzle-oauth2-subscriber/src/Signer/ClientCredentials/Json.php on line 8
