{"error":{"code":"internal_api_error_InvalidArgumentException","info":"[5490a23f343297ecdb0b0670] Exception caught: Wikimedia\\Rdbms\\Database::makeList: empty input for field user_id","trace":"InvalidArgumentException at /var/www/bluespice/w/includes/libs/rdbms/database/Database.php(2048)\n#0 /var/www/bluespice/w/includes/libs/rdbms/database/Database.php(1690): Wikimedia\\Rdbms\\Database->makeList(array, integer)\n#1 /var/www/bluespice/w/includes/libs/rdbms/database/Database.php(1651): Wikimedia\\Rdbms\\Database->selectSQLText(string, string, array, string, array, array)\n#2 /var/www/bluespice/w/extensions/BlueSpiceFoundation/src/Data/Watchlist/PrimaryDataProvider.php(137): Wikimedia\\Rdbms\\Database->select(string, array, array)\n#3 /var/www/bluespice/w/extensions/BlueSpiceFoundation/src/Data/Watchlist/PrimaryDataProvider.php(81): BlueSpice\\Data\\Watchlist\\PrimaryDataProvider->addUserFields()\n#4 /var/www/bluespice/w/extensions/BlueSpiceFoundation/src/Data/Reader.php(59): BlueSpice\\Data\\Watchlist\\PrimaryDataProvider->makeData(BlueSpice\\Data\\ReaderParams)\n#5 /var/www/bluespice/w/extensions/BlueSpiceFoundation/src/Api/Store.php(62): BlueSpice\\Data\\Reader->read(BlueSpice\\Data\\ReaderParams)\n#6 /var/www/bluespice/w/includes/api/ApiMain.php(1579): BlueSpice\\Api\\Store->execute()\n#7 /var/www/bluespice/w/includes/api/ApiMain.php(535): ApiMain->executeAction()\n#8 /var/www/bluespice/w/includes/api/ApiMain.php(506): ApiMain->executeActionWithErrorHandling()\n#9 /var/www/bluespice/w/api.php(94): ApiMain->execute()\n#10 {main}"}}