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 ('d8f05b3b22630f5efe2e430dca8c1d5d', -1, 1711659285, 1711659285, '03eec351', -7, 0, 0)

Line : 187
File : sessions.php