Some errors from php error log

[08-May-2014 03:30:56 UTC] PHP Notice: iconv(): Detected an illegal character in input string in /home5/dutchqua/public_html/inspirationforsuccess/wp-content/plugins/antispam-bee/antispam_bee.php on line 1463
[08-May-2014 03:30:56 UTC] PHP Warning: preg_match(): Compilation failed: invalid UTF-8 string at offset 1 in /home5/dutchqua/public_html/inspirationforsuccess/wp-content/plugins/antispam-bee/antispam_bee.php on line 1471
[08-May-2014 03:30:58 UTC] PHP Notice: Undefined index: email_notify in /home5/dutchqua/public_html/inspirationforsuccess/wp-content/plugins/antispam-bee/antispam_bee.php on line 2103

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