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 ('bf79ae9a6c5de31db7efacb6a152b660', -1, 1714034900, 1714034900, '038ff453', -10, 0, 0)

Line : 187
File : sessions.php