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 ('2dae2c4928866eae3dbb9c3d0f42d151', -1, 1708805414, 1708805414, '03eb916c', -11, 0, 0)

Line : 187
File : sessions.php