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) VALUES ('b78178757243d33ccd79a0b10d6c706a', -1, 1714705186, 1714705186, '038d1886', -2, 0)

Line : 158
File : sessions.php