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) VALUES ('88d37b2c9c4d1fc6ca796fb9780aa44e', -1, 1714229820, 1714229820, '03913aa9', 20, 0)

Line : 158
File : sessions.php