phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '66c20ced074f7463b7d67496d9bd78d0' 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 ('66c20ced074f7463b7d67496d9bd78d0', -1, 1763713709, 1763713709, 'd849d868', 12, 0, 0)

Line : 187
File : sessions.php