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 ('8a5249195b8f4a9d394fc20ec51fc781', -1, 1714608496, 1714608496, '0381f7c4', 2, 0)

Line : 158
File : sessions.php