CAPQuiz questions page ERROR: Mixed types of sql query parameters!!

[BlackBlueGreens]

Questions page throws ERROR code: mixedtypesqlparam
alongside a dml_exception exception thrown
https://iirmoodle-dev.it.ntnu.no/mod/capquiz/edit.php?id=6&qpage=0

Stack trace:
line 923 of /lib/dml/moodle_database.php: dml_exception thrown
line 1005 of /lib/dml/pgsql_native_moodle_database.php: call to moodle_database->fix_sql_params()
line 1671 of /lib/dml/moodle_database.php: call to pgsql_native_moodle_database->get_records_sql()
line 42 of /question/editlib.php: call to moodle_database->get_record_sql()
line 316 of /question/editlib.php: call to get_module_from_cmid()
line 125 of /mod/capquiz/classes/output/question_bank_renderer.php: call to question_build_edit_resources()
line 72 of /mod/capquiz/classes/output/question_bank_renderer.php: call to mod_capquiz\output\question_bank_renderer->setup_question_edit()
line 86 of /mod/capquiz/classes/output/question_bank_renderer.php: call to mod_capquiz\output\question_bank_renderer->create_view()
line 238 of /mod/capquiz/classes/output/renderer.php: call to mod_capquiz\output\question_bank_renderer->render()
line 108 of /mod/capquiz/classes/output/renderer.php: call to class@anonymous/var/www/moodle/mod/capquiz/classes/output/renderer.php:214$10d->render()
line 242 of /mod/capquiz/classes/output/renderer.php: call to mod_capquiz\output\renderer->display_tabbed_view()
line 45 of /mod/capquiz/edit.php: call to mod_capquiz\output\renderer->display_question_list_view()

[hgeorgsch]

This seems to be gone, but further testing is needed.