phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '3a436429e681219b868f552013042357' 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 ('3a436429e681219b868f552013042357', -1, 1769288240, 1769288240, 'd849d802', 18, 0, 0)

Line : 187
File : sessions.php