Hotel website problems

somebody help me,i build a web for hotel using hotel them ,i found seach problems

Warning: Illegal string offset 'date' in rooms_booking_availability_search_form_validate() (line 1006 of C:\xampp\htdocs\hotel\sites\all\modules\rooms\modules\rooms_booking_manager\rooms_booking_manager.module).
Warning: Illegal string offset 'date' in rooms_booking_availability_search_form_validate() (line 1006 of C:\xampp\htdocs\hotel\sites\all\modules\rooms\modules\rooms_booking_manager\rooms_booking_manager.module).

this is the second problems i found
when i want to register for booking a room ,some body helps me

error

PDOException: SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'revision_id' cannot be null: INSERT INTO {commerce_customer_profile} (revision_id, type, uid, status, created, changed) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5); Array ( [:db_insert_placeholder_0] => [:db_insert_placeholder_1] => billing [:db_insert_placeholder_2] => 0 [:db_insert_placeholder_3] => 1 [:db_insert_placeholder_4] => 1362054764 [:db_insert_placeholder_5] => 1362054764 ) in drupal_write_record() (line 7036 of C:\xampp\htdocs\hotel\includes\common.inc).
The website encountered an unexpected error. Please try again later.