Program Error (Server Error 500)

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Can't use 'defined(@array)' (Maybe you should just omit the defined()?) at DADA/perllib/ line 497.
Compilation failed in require at DADA/Template/ line 44.
BEGIN failed--compilation aborted at DADA/Template/ line 44.
Compilation failed in require at mail.cgi line 163.
BEGIN failed--compilation aborted at mail.cgi line 163.