Error message

• Notice: Undefined index: field_categoria_tid in eval() (line 3 of /var/www/ayto/drupal/modules/php/php.module(80) : eval()'d code).
• Notice: Trying to access array offset on value of type null in eval() (line 4 of /var/www/ayto/drupal/modules/php/php.module(80) : eval()'d code).
• Notice: Trying to get property 'name' of non-object in eval() (line 5 of /var/www/ayto/drupal/modules/php/php.module(80) : eval()'d code).