Broken Message error

[suzytor...@gmail.com]

Hi we have an error showing up now for one of the fields that we use the below formula.  It helps in turning our text to a certain color and font size.  Does this have to do with it being old code?  If so what should we be using now?

IF(TEXT(Deadline__c ) <> "", (IMAGE("https://chart.googleapis.com/chart?chd=d_text_outline&chld=FF0000|28|l|FFFFFF|b|" + TEXT(MONTH(Deadline__c))+"/" +TEXT(DAY(Deadline__c))+"/" +TEXT(YEAR(Deadline__c)) , "Message")), "")