phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '81ff5df063c892f7a24cf6fabaa64ba0' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('81ff5df063c892f7a24cf6fabaa64ba0', -1, 1753126399, 1753126399, 'd849d80b', 40, 0, 0)

Line : 187
File : sessions.php