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 ('23a6d8892b973b545c3c71f8b2ac6309', -1, 1713917999, 1713917999, '039071c5', 0, 0, 0)

Line : 187
File : sessions.php