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 ('ab806a5f0d490e339e20213a218e6a32', -1, 1714006783, 1714006783, '03935955', 3, 0, 0)

Line : 187
File : sessions.php