phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'e4f31f8e5488203cf5e5ffee02c03144' 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 ('e4f31f8e5488203cf5e5ffee02c03144', -1, 1770357295, 1770357295, 'd849d88e', -9, 0, 0)

Line : 187
File : sessions.php