phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8b661c175a539c694aab29a673957556' 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 ('8b661c175a539c694aab29a673957556', -1, 1762928966, 1762928966, 'd849d817', -4, 0, 0)

Line : 187
File : sessions.php