phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO forum_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('c10a0b965d2c2b032e76ccbc7c5a7c2f', -1, 1716749171, 1716749171, '12db2013', 1, 0, 0)

Line : 187
File : sessions.php