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 ('70d3daa5e4c5ef547a0fc73dd6e00ac6', -1, 1713270628, 1713270628, '0381f7c4', -2, 0, 0)

Line : 187
File : sessions.php