phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('8061673931ccc56e7a6c959f555f30f9', -1, 1709613341, 1709613341, '2cdc3eb7', -4, 0, 0)

Line : 187
File : sessions.php