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 ('a72e14291539e7a4d5e2cce64a704cf2', -1, 1716767621, 1716767621, '1276a716', -4, 0, 0)

Line : 187
File : sessions.php