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 ('d2bef5e9f3af8e703b66b47120dabaa1', -1, 1713999110, 1713999110, '0389dae6', -11, 0, 0)

Line : 187
File : sessions.php