phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9960279a32bd1beef2ec80c35695d3d6' 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 ('9960279a32bd1beef2ec80c35695d3d6', -1, 1776299284, 1776299284, 'd849d81f', 1, 0, 0)

Line : 187
File : sessions.php