Slim Application Error

The application could not run because of the following error:

Details:

Message: Undefined variable: imagen_url_iconos
File: /home/iiokke50/public_html/mp3/anuncio.php
Line: 104

Stack Trace:

#0 /home/iiokke50/public_html/mp3/anuncio.php(104): Slim::handleErrors(8, 'Undefined varia...', '/home/iiokke50/...', 104, Array)
#1 /home/iiokke50/public_html/mp3/api/index.php(162): include('/home/iiokke50/...')
#2 [internal function]: getTema('6620')
#3 /home/iiokke50/public_html/mp3/api/Slim/Route.php(392): call_user_func_array('getTema', Array)
#4 /home/iiokke50/public_html/mp3/api/Slim/Slim.php(1052): Slim_Route->dispatch()
#5 /home/iiokke50/public_html/mp3/api/index.php(32): Slim->run()
#6 {main}