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 ('16b3c1c3dce5f4c6de86a2d97333f595', -1, 1713485374, 1713485374, '1276a662', 7, 0, 0)

Line : 187
File : sessions.php