phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '840bb9ca1d6c9b5a2f494b81223e1073' 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 ('840bb9ca1d6c9b5a2f494b81223e1073', -1, 1765531536, 1765531536, 'd849d889', -4, 0, 0)

Line : 187
File : sessions.php