Unable to upload photo at homepage

Try to upload photo at homepage, but error with below message

cgi-lib: reached end of input while seeking end of headers. Format of CGI input is wrong.
cgi-lib: reached end of input while seeking end of headers. Format of CGI input is wrong.
Software error:
cgi-lib: reached end of input while seeking end of headers. Format of CGI input is wrong.
For help, please send mail to the webmaster (root@localhost), giving this error message and the time and date of the error.

How to send mail to webmaster? How to solve this problem.

Please advise. Thank you

Please post your club number with every post so we can check what is happening.