Debug info: ERROR: invalid input syntax for integer: ""

SELECT * FROM mdl_backup_ids_temp WHERE backupid = $1 AND itemname = $2 AND itemid = $3

[array (

0 => 'e9e378ea1e5dd0a80eac3ca55300f321',

1 => 'question_answer',

2 => '',

)]Stack trace:line 391 of /lib/dml/moodle_database.php: dml_read_exception thrownline 232 of /lib/dml/pgsql_native_moodle_database.php: call to moodle_database->query_end()line 672 of /lib/dml/pgsql_native_moodle_database.php: call to pgsql_native_moodle_database->query_end()line 1256 of /lib/dml/moodle_database.php: call to pgsql_native_moodle_database->get_records_sql()line 1228 of /lib/dml/moodle_database.php: call to moodle_database->get_record_sql()line 1208 of /lib/dml/moodle_database.php: call to moodle_database->get_record_select()line 1257 of /backup/util/dbops/restore_dbops.class.php: call to moodle_database->get_record()line 210 of /backup/util/plan/restore_structure_step.class.php: call to restore_dbops::get_backup_ids_record()line 202 of /backup/util/plan/restore_structure_step.class.php: call to restore_structure_step->get_mapping()line 179 of /backup/moodle2/restore_plugin.class.php: call to restore_structure_step->get_mappingid()line 73 of /question/type/shortanswer/backup/moodle2/restore_qtype_shortanswer_plugin.class.php: call to restore_plugin->get_mappingid()line 131 of /backup/util/plan/restore_structure_step.class.php: call to restore_qtype_shortanswer_plugin->process_shortanswer()line 103 of /backup/util/helper/restore_structure_parser_processor.class.php: call to restore_structure_step->process()line 106 of /backup/util/xml/parser/processors/grouped_parser_processor.class.php: call to restore_structure_parser_processor->dispatch_chunk()line 91 of /backup/util/helper/restore_structure_parser_processor.class.php: call to grouped_parser_processor->postprocess_chunk()line 132 of /backup/util/xml/parser/processors/simplified_parser_processor.class.php: call to restore_structure_parser_processor->postprocess_chunk()line 92 of /backup/util/xml/parser/processors/progressive_parser_processor.class.php: call to simplified_parser_processor->process_chunk()line 169 of /backup/util/xml/parser/progressive_parser.class.php: call to progressive_parser_processor->receive_chunk()line 253 of /backup/util/xml/parser/progressive_parser.class.php: call to progressive_parser->publish()line ? of unknownfile: call to progressive_parser->end_tag()line 158 of /backup/util/xml/parser/progressive_parser.class.php: call to xml_parse()line 137 of /backup/util/xml/parser/progressive_parser.class.php: call to progressive_parser->parse()line 105 of /backup/util/plan/restore_structure_step.class.php: call to progressive_parser->process()line 153 of /backup/util/plan/base_task.class.php: call to restore_structure_step->execute()line 148 of /backup/util/plan/base_plan.class.php: call to base_task->execute()line 157 of /backup/util/plan/restore_plan.class.php: call to base_plan->execute()line 299 of /backup/controller/restore_controller.class.php: call to restore_plan->execute()line 144 of /backup/util/ui/restore_ui.class.php: call to restore_controller->execute_plan()line 39 of /backup/restore.php: call to restore_ui->execute()