Error message

• Warning: date_format(): The DateTime object has not been correctly initialized by its constructor in date_formatter_process() (line 254 of /home/vacarizu/public_html/drupal/modules/date/date.module).
• Warning: date_timezone_set(): The DateTime object has not been correctly initialized by its constructor in date_formatter_process() (line 256 of /home/vacarizu/public_html/drupal/modules/date/date.module).
• Warning: date_format(): The DateTime object has not been correctly initialized by its constructor in date_formatter_process() (line 258 of /home/vacarizu/public_html/drupal/modules/date/date.module).
• Warning: date_offset_get(): The DateTime object has not been correctly initialized by its constructor in date_formatter_process() (line 260 of /home/vacarizu/public_html/drupal/modules/date/date.module).
• Warning: DateTime::format(): The DateTime object has not been correctly initialized by its constructor in DateObject->format() (line 392 of /home/vacarizu/public_html/drupal/modules/date/date_api/date_api.module).
• Warning: array_intersect(): Argument #2 is not an array in date_granularity_sorted() (line 1554 of /home/vacarizu/public_html/drupal/modules/date/date_api/date_api.module).
• Warning: array_pop() expects parameter 1 to be array, null given in date_granularity_precision() (line 1601 of /home/vacarizu/public_html/drupal/modules/date/date_api/date_api.module).