phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'bf8362d7a24ca597e4d0cae12c0c8c79' 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 ('bf8362d7a24ca597e4d0cae12c0c8c79', -1, 1778161181, 1778161181, 'd849d8ac', -9, 0, 0)

Line : 187
File : sessions.php