phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '5f717c140602bc2d2b4feb52804dca78' 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 ('5f717c140602bc2d2b4feb52804dca78', -1, 1776006705, 1776006705, 'd849d879', 7, 0, 0)

Line : 187
File : sessions.php