phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9b51f67bf6de62118648ef823d3eea96' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('9b51f67bf6de62118648ef823d3eea96', -1, 1758874263, 1758874263, 'd849d8a2', -4, 0, 0)

Line : 187
File : sessions.php