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I am having problems with the program, when I try to open ticket #0061, the system freezes for a long time and when it opens, it only shows the main data of the ticket, however, it does not allow me to reply or update anything. Also, the system does not throw any logged errors.
It does not happen with other tickets, the only one that gives problems is #0061
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It looks like its dying at "Fecha de Vencimiento".
My guess is that there is a PHP (or MySQL) error that be being logged that corresponds with this issue. We would need it to be able to attempt to diagnose your issue.