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 ('5a3e381388a5bef5f27b822f2aada2bd', -1, 1614695730, 1614695730, '36ec3adc', -2, 0, 0)

Line : 189
File : sessions.php