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 ('7cb62944a0f5807fd0cfe5a96a262f6e', -1, 1713516508, 1713516508, '12778f04', -11, 0, 0)

Line : 187
File : sessions.php