[imp] PHP ERROR: spl_object_hash()

[ANANT S ATHAVALE]

Dear List,

Just confirm whether the following error is ignorable?

Dec 27 2013 15:20:35 WARN: HORDE [imp] PHP ERROR: spl_object_hash() expects
parameter 1 to be object, null given [pid 24710 on line 48 of
"/var/www/horde/imp/lib/Factory/MimeViewer.php"]
-- 
           Regards
            Anant
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