element_helper::get_date_format_string(): Argument #1 ($date) must be of type int, string given (5.2)

[leonstr]

Steps to reproduce issue

1. Create a course.
2. Enrol a student.
3. Add a custom certificate instance.
4. Add a date element to the certificate set to "Issued date".
5. Log in as the student and view the certificate.

Expected results

The certificate is displayed.

Actual results

On page mod/customcert/view.php?id=10&downloadown=1:

Exception - mod_customcert\element_helper::get_date_format_string(): Argument #1 ($date) must be of type int, string given, called in [dirroot]/mod/customcert/element/date/classes/element.php on line 274

More information about this error

Debug info:
Error code: generalexceptionmessageDismiss this notification
Stack trace:
line 788 of /public/mod/customcert/classes/element_helper.php: TypeError thrown
line 274 of /public/mod/customcert/element/date/classes/element.php: call to mod_customcert\element_helper::get_date_format_string()
line 68 of /public/mod/customcert/classes/service/pdf_renderer.php: call to customcertelement_date\element->render()
line 123 of /public/mod/customcert/classes/local/preview_renderer.php: call to mod_customcert\service\pdf_renderer->render_pdf()
line 112 of /public/mod/customcert/classes/service/pdf_generation_service.php: call to mod_customcert\local\preview_renderer->render_pdf_page()
line 253 of /public/mod/customcert/view.php: call to mod_customcert\service\pdf_generation_service->generate_pdf()

Environment

Tested with Moodle 5.2dev (Build: 20260306) and mod_customcert 2025122800 (commit 0cc3c13).

[leonstr]

It looks like with declare(strict_types=1) values like "1773865744" aren't coerced to ints.