Checked with Arvin about the reported error encountered when adding a ticket in the web application, as per Arvin, he and Yvette can't add a ticket. advised that this will be checked on our side. Reposted on the team the encountered error and investigated it, as per investigation, found out that the cause is the generation of ticket reference for a ticket to be added, though the ticket reference is based on the year selected in the start date, the web application is extracting last inserted reference from the table, and on the extracted reference 1 is added and it will become the new ticket reference, but for the current extraction NULL is returned as there is no added ticket for 2023 yet. The NULL value should be caught for the web application to not encounter the error and for the ticket to be added successfully. Advised the team on the findings.