phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '5540940b6d9cea839c41891180f2dc68' 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 ('5540940b6d9cea839c41891180f2dc68', -1, 1788737430, 1788737430, 'd849d86d', -10, 0, 0)

Line : 187
File : sessions.php