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 ('df060ccc1c241b2a5fe79957a67cd5ba', -1, 1714020384, 1714020384, '038d1ff0', 0, 0, 0)

Line : 187
File : sessions.php