phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '51173fb673cc327aa93122374c80aedd' 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 ('51173fb673cc327aa93122374c80aedd', -1, 1763883096, 1763883096, 'd849d80e', -4, 0, 0)

Line : 187
File : sessions.php