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 ('af7e79939bd5ff11f2357b9407b9e3f1', -1, 1714222766, 1714222766, '0390568a', -8, 0)

Line : 158
File : sessions.php