useragent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0) error

[pchelailya]

error with IE8

useragent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0)
message: 'performance' - definition not found
string: 21
symbol: 9
code: 0
URI-код: https://domain/js/Has/detect/dates.js?1403003572