Error message

• Notice: Trying to access array offset on value of type null in theme_pager() (line 331 of /home1/montes/public_html/books/includes/pager.inc).
• Notice: Trying to access array offset on value of type null in theme_pager() (line 337 of /home1/montes/public_html/books/includes/pager.inc).
• Notice: Trying to access array offset on value of type null in theme_pager_first() (line 459 of /home1/montes/public_html/books/includes/pager.inc).
• Notice: Trying to access array offset on value of type null in theme_pager_previous() (line 489 of /home1/montes/public_html/books/includes/pager.inc).
• Notice: Trying to access array offset on value of type null in theme_pager_next() (line 528 of /home1/montes/public_html/books/includes/pager.inc).
• Notice: Trying to access array offset on value of type null in theme_pager_next() (line 528 of /home1/montes/public_html/books/includes/pager.inc).
• Notice: Trying to access array offset on value of type null in theme_pager_next() (line 529 of /home1/montes/public_html/books/includes/pager.inc).
• Notice: Trying to access array offset on value of type null in theme_pager_next() (line 531 of /home1/montes/public_html/books/includes/pager.inc).
• Notice: Trying to access array offset on value of type null in theme_pager_last() (line 564 of /home1/montes/public_html/books/includes/pager.inc).
• Notice: Trying to access array offset on value of type null in theme_pager_last() (line 564 of /home1/montes/public_html/books/includes/pager.inc).
• Notice: Trying to access array offset on value of type null in theme_pager_last() (line 565 of /home1/montes/public_html/books/includes/pager.inc).
• Notice: Trying to access array offset on value of type null in theme_pager() (line 359 of /home1/montes/public_html/books/includes/pager.inc).
• Deprecated function: implode(): Passing glue string after array is deprecated. Swap the parameters in drupal_get_feeds() (line 394 of /home1/montes/public_html/books/includes/common.inc).
• Deprecated function: The each() function is deprecated. This message will be suppressed on further calls in menu_set_active_trail() (line 2405 of /home1/montes/public_html/books/includes/menu.inc).