I have included the validation of the server, however it does not work. I guess I've done something wrong.
The form has stopped uploading and clicking the Submit button gives me a warning whether the file extension is correct or not.
Warning: Cannot modify header information - headers already sent by (output started at /Applications/MAMP/htdocs/PML_4_2015_repar_prueba_ED_MSB/pml_admin/Gestiondocumentos.php:2) in /Applications/MAMP/htdocs/PML_4_2015_repar_prueba_ED_MSB/webassist/form_validations/wavt_scripts_php.php on line 85
What have I done wrong?
I attach my upload form