phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '7f82f838d6f5d5df9374859781cc7774' 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 ('7f82f838d6f5d5df9374859781cc7774', -1, 1770028761, 1770028761, 'd849d8d8', 1, 0, 0)

Line : 187
File : sessions.php