CGI notwithstanding, the error is in your here-doc syntax. In Perl, here-docs must be created in the following ways: 
print <<NO_SPACE_BETWEEN_THE_ANGLE_BRACKETS_AND_THIS_TEXT;
...
NO_SPACE_BETWEEN_THE_ANGLE_BRACKETS_AND_THIS_TEXT

# or

print << "SPACE_ALLOWED_WHEN_THIS_TEXT_IS_QUOTED";
...
SPACE_ALLOWED_WHEN_THIS_TEXT_IS_QUOTED

[download]
This is documented in perlop: "There must be no space between the '<<' and the identifier, unless the identifier is quoted. (If you put a space it will be treated as a null identifier, which is valid, and matches the first empty line.)"
Jeff japhy Pinyan, P.L., P.M., P.O.D, X.S.: Perl, regex, and perl hacker
Nos autem praedicamus Christum crucifixum (1 Cor. 1:23) - The Cross Reference (My Blog)

In reply to Re: CGI script gives "internal server error" by japhy
in thread CGI script gives "internal server error" by manish.rathi

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