phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'b9bdb17c6b305bbfda45db8250df9b76' 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 ('b9bdb17c6b305bbfda45db8250df9b76', -1, 1766012283, 1766012283, 'd849d8d7', -4, 0, 0)

Line : 187
File : sessions.php