phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('df7cdbf05ae76b8a278d3144bd746a40', -1, 1397854347, 1397854347, '36c6e079', 10, 0)

Line : 158
File : sessions.php