phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c480ec31643e9c6f38ca43158ad1e58f' 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 ('c480ec31643e9c6f38ca43158ad1e58f', -1, 1771287258, 1771287258, 'd849d874', -9, 0, 0)

Line : 187
File : sessions.php