phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '51a766c2487a9d3062554a7f9973eb17' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('51a766c2487a9d3062554a7f9973eb17', -1, 1714400810, 1714400810, '12e02c6c', 10, 0, 0)

Line : 187
File : sessions.php