phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9f7d2d7a47ee378b13939fef496b7b82' 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 ('9f7d2d7a47ee378b13939fef496b7b82', -1, 1772149941, 1772149941, 'd849d851', 2, 0, 0)

Line : 187
File : sessions.php