[01-Aug-2025 18:24:00 UTC] PHP Fatal error:  Uncaught Error: Class "PKP\observers\listeners\SendSubmissionAcknowledgement" not found in /home/royalbookpublish/public_html/classes/observers/listeners/SendSubmissionAcknowledgement.php:25
Stack trace:
#0 {main}
  thrown in /home/royalbookpublish/public_html/classes/observers/listeners/SendSubmissionAcknowledgement.php on line 25
[02-Aug-2025 00:51:28 UTC] PHP Fatal error:  Uncaught Error: Class "PKP\observers\listeners\SendSubmissionAcknowledgement" not found in /home/royalbookpublish/public_html/classes/observers/listeners/SendSubmissionAcknowledgement.php:25
Stack trace:
#0 {main}
  thrown in /home/royalbookpublish/public_html/classes/observers/listeners/SendSubmissionAcknowledgement.php on line 25
[05-Aug-2025 07:48:02 UTC] PHP Fatal error:  Uncaught Error: Class "PKP\observers\listeners\SendSubmissionAcknowledgement" not found in /home/royalbookpublish/public_html/classes/observers/listeners/SendSubmissionAcknowledgement.php:25
Stack trace:
#0 {main}
  thrown in /home/royalbookpublish/public_html/classes/observers/listeners/SendSubmissionAcknowledgement.php on line 25
[05-Aug-2025 18:09:42 UTC] PHP Fatal error:  Uncaught Error: Class "PKP\observers\listeners\SendSubmissionAcknowledgement" not found in /home/royalbookpublish/public_html/classes/observers/listeners/SendSubmissionAcknowledgement.php:25
Stack trace:
#0 {main}
  thrown in /home/royalbookpublish/public_html/classes/observers/listeners/SendSubmissionAcknowledgement.php on line 25
[06-Aug-2025 06:41:56 UTC] PHP Fatal error:  Uncaught Error: Class "PKP\observers\listeners\SendSubmissionAcknowledgement" not found in /home/royalbookpublish/public_html/classes/observers/listeners/SendSubmissionAcknowledgement.php:25
Stack trace:
#0 {main}
  thrown in /home/royalbookpublish/public_html/classes/observers/listeners/SendSubmissionAcknowledgement.php on line 25