Error message

• Notice: unserialize(): Error at offset 28 of 35 bytes in variable_initialize() (line 1189 of /customers/c/0/8/janssenbouwadvies.nl/httpd.www/Collings/includes/bootstrap.inc).
• Deprecated function: implode(): Passing glue string after array is deprecated. Swap the parameters in drupal_get_feeds() (line 394 of /customers/c/0/8/janssenbouwadvies.nl/httpd.www/Collings/includes/common.inc).