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 ('43831732bda2e0f63dc76c4743d5d1ed', -1, 1713993858, 1713993858, '12bc3ddf', -4, 0, 0)

Line : 187
File : sessions.php