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 ('74e5ecc9b23c8aa16c06b81f66c9a0b7', -1, 1713877954, 1713877954, '0d3afc08', -10, 0, 0)

Line : 187
File : sessions.php