Formation of optimized learning groups - by topic preference or best match of individuals' characteristics and preferences; in one easy to use Moodle acticity
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Postgresql COUNT Error in SQL statement on creation of new activity instance #4
[error] 7753#7753: *6909714 FastCGI sent in stderr: "PHP message: Default exception handler: Fehler beim Lesen der Datenbank Debug: FEHLER: ungültige Eingabesyntax für ganze Zahl: „“
SELECT COUNT('x') FROM mdl_groupformation_answer WHERE groupformation = $1
[array (
0 => '',
)]
Error code: dmlreadexception
line 474 of /lib/dml/moodle_database.php: dml_read_exception thrown
line 244 of /lib/dml/pgsql_native_moodle_database.php: call to moodle_database->query_end()
line 794 of /lib/dml/pgsql_native_moodle_database.php: call to pgsql_native_moodle_database->query_end()
line 1527 of /lib/dml/moodle_database.php: call to pgsql_native_moodle_database->get_records_sql()
line 1600 of /lib/dml/moodle_database.php: call to moodle_database->get_record_sql()
line 1810 of /lib/dml/moodle_database.php: call to moodle_database->get_field_sql()
line 1793 of /lib/dml/moodle_database.php: call to moodle_database->count_records_sql()
line 1776 of /lib/dml/moodle_database.php: call to moodle_database->count_records_select()
line 581 of /mod/groupform" while reading response header from upstream, client: 130....., server: moodle......de, request: "GET /course/modedit.php?add=groupformation&type=&course=2§ion=3&return=0&sr=0 HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "moodle......de", referrer: "https://moodle.......de/course/view.php?id=2”
[error] 7753#7753: *6909714 FastCGI sent in stderr: "PHP message: Default exception handler: Fehler beim Lesen der Datenbank Debug: FEHLER: ungültige Eingabesyntax für ganze Zahl: „“
SELECT COUNT('x') FROM mdl_groupformation_answer WHERE groupformation = $1 [array ( 0 => '', )]
Error code: dmlreadexception