phpBB : Critical Error

if the following error message can not help you to solve the problem,please contact the Administrator. [email protected],please make sure to send the error message together to us,thank you!
Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'b435a34cdd829b6c3fc1e7ac6afcdec1' 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 ('b435a34cdd829b6c3fc1e7ac6afcdec1', -1, 1714407144, 1714407144, '1275d8e5', 210, 0, 0)

Line : 186
File : sessions.php