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 ('77404ac1a9633224ba2d11b8d6f01175', -1, 1711632223, 1711632223, '03eec351', -1, 0, 0)

Line : 187
File : sessions.php