panic: cannot read "../../sampledata_ru/20200525/08/4265183763983218158.html"

goroutine 2511 [running]:
_/home/ec2-user/environment/cluster2/cluster2/newsDetect.CategoriesCommand.func1.1(0xc000098000, 0xc00009a000, 0xc00009a030, 0xc000665c20, 0x5b)
	/home/ec2-user/environment/cluster2/cluster2/newsDetect/newsCommand.go:171 +0xb46
created by _/home/ec2-user/environment/cluster2/cluster2/newsDetect.CategoriesCommand.func1
	/home/ec2-user/environment/cluster2/cluster2/newsDetect/newsCommand.go:165 +0x18a