phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'cc7d2e05808d4ff9c6e417221ae90c83' 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 ('cc7d2e05808d4ff9c6e417221ae90c83', -1, 1771214806, 1771214806, 'd849d800', 10, 0, 0)

Line : 187
File : sessions.php