applications/football/widgets/fixtures.php
Find
$teamsLeagues = (count($teams) ? \IPS\Db::i()->in( 'team1', $teams ) . ' OR ' . \IPS\Db::i()->in( 'team2', $teams ) : '') . (count($leagues) ? ' OR ' . \IPS\Db::i()->in( 'lig_id', $leagues ) : '');
replace with
$teamsLeagues = (count($teams) ? \IPS\Db::i()->in( 'team1', $teams ) . ' OR ' . \IPS\Db::i()->in( 'team2', $teams ) : '') . (count($leagues) ? (count($teams) ? ' OR ' : '') . \IPS\Db::i()->in( 'lig_id', $leagues ) : '');
However, if someone is not able to apply the fix (don't know how to edit files, hosted on CiC) I will be releasing a new version asap.