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 ('8825b270f624d66d5cb2f8ee2b3884ca', -1, 1713928413, 1713928413, '03856cf1', -10, 0, 0)

Line : 187
File : sessions.php