phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9c59a840cf5b836f346679f374782a95' 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 ('9c59a840cf5b836f346679f374782a95', -1, 1768330708, 1768330708, 'd849d81c', -4, 0, 0)

Line : 187
File : sessions.php