phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8476fd89e740cdf0d4b98c38dcbc58b9' 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 ('8476fd89e740cdf0d4b98c38dcbc58b9', -1, 1762326977, 1762326977, 'd849d887', -9, 0, 0)

Line : 187
File : sessions.php