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 ('bbca1dff2e545a7a2e5ab3a5a66b54a0', -1, 1713933874, 1713933874, '038ac842', 2, 0, 0)

Line : 187
File : sessions.php