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 ('1e5f09c553b1b06f083cf2c383c5a62b', -1, 1713869725, 1713869725, '0313382d', -4, 0, 0)

Line : 187
File : sessions.php