Warning: Missing argument 2

[jothikannan]

Hi ,

i have following warning in my website , i have upgraded into 1.4.7 , there after it causing the following warning

Warning: Missing argument 2 for PHPLeague_Database::is_fixture_exists(), called in /home/demoosiz/public_html/zamalekfans/wp-content/plugins/phpleague/libs/phpleague-front.php on line 257 and defined in /home/demoosiz/public_html/zamalekfans/wp-content/plugins/phpleague/libs/phpleague-database.php on line 479