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 ('719ada85e20bb1ba4c05a1c8fe663f23', -1, 1730418111, 1730418111, '038e9cca', 35, 0, 0)

Line : 195
File : sessions.php