phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '471155ca67f975c0284d41a158f36517' 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 ('471155ca67f975c0284d41a158f36517', -1, 1766806726, 1766806726, 'd849d819', 27, 0, 0)

Line : 187
File : sessions.php