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 ('a7fb66b4e57b2aa6bc5f00ae9b6756c2', -1, 1715950099, 1715950099, '03933bd9', 12, 0)

Line : 158
File : sessions.php