phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '899a3a75d2ba4c2d7f749e2dd7f79bef' 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 ('899a3a75d2ba4c2d7f749e2dd7f79bef', -1, 1769890693, 1769890693, 'd849d851', -4, 0, 0)

Line : 187
File : sessions.php