ok, the error at the top is the heart of the problem:
Warning: move_uploaded_file(/var/www/html/dtele/dadmin/../dtel/picture1/73e52238c20cd33edf6d96a396883b66_tmp.jpg): failed to open stream: Permission denied in /var/www/html/dtele/webassist/file_manipulation/helperphp.php on line 94
this means the upload folder does not haver proper permissions for saving the uploaded file.
edit the permissions for the upload folder to 777 to allow write access which will allow the files to be saved on the server.