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I am facing a problems with my wordpress site and i cannot see anything on my login screen : http://vtrails.us/login - It's blank. But in my error_log file i am looking a problem

PHP Warning: Cannot modify header information - headers already sent by (output started at /home/vtrailsu/public_html/wp-content/plugins/mix-tape/update_calls.php:198) in /home/vtrailsu/public_html/wp-includes/pluggable.php on line 1228 enter image description here But I cannot see anything on update_calls : line 198 (see above) So what can be it's solution? Can i get more information about it?

Shaving Blade
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  • You have error (called warning) in this case :) – Grzegorz Dec 24 '15 at 12:51
  • try to change inside PHP.ini "output_buffering = On". it solve my problem. http://chevronscode.com/index.php/wordpress-header-error-wp-includespluggable-php.html – chen Feb 16 '16 at 15:15

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Don't use ?> at the end of php script. Closing tag is optional. + there are 2 newline characters after ?> which make output.

Use ?> closing tag only when you want to write pure html after that

Grzegorz
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