Error message

• Warning: date_timezone_set() expects parameter 1 to be DateTime, bool given in format_date() (line 2009 of /home2/adam/public_html/teatimetreatery/includes/common.inc).
• Warning: date_format() expects parameter 1 to be DateTimeInterface, bool given in format_date() (line 2019 of /home2/adam/public_html/teatimetreatery/includes/common.inc).
• Deprecated function: implode(): Passing glue string after array is deprecated. Swap the parameters in drupal_get_feeds() (line 394 of /home2/adam/public_html/teatimetreatery/includes/common.inc).