if($validParams) {
# ...
    print $json_output_encoded;
# ...
}
else {
# ...
    Apache2::RequestUtil->request->custom_response(400,$json_output_en
+coded);

[download]
Is this a CGI or some mod_perl code? If it's a CGI and you haven't set something up to load Apache2::RequestUtil by default, this could be the reason for the error. What happens if you do the same thing (print $json_output_encoded;) in both your if branches?

In reply to Re^5: Perl CGI return 400 Bad request response with JSON content by Anonymous Monk
in thread Perl CGI return 400 Bad request response with JSON content by dineshyagappan

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