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 ('b15ca9fb5dc29fe88b7bde77de92555b', -1, 1714837440, 1714837440, '03103303', -4, 0, 0)

Line : 187
File : sessions.php