phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '1' for key 'session_user_id'

INSERT INTO sajjad_bbsessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('bb172f643cfdb49861910d1646175853', '1', '1513635203', '1513635203', '36e222d1', '48', '0', '0')

Line : 207
File : sessions.php