try to reindex using

reindex magento2 using command

Your path like `var\www\html\magento2\bin`

Now You have to enter command `sudo php bin/magento indexer:reindex`

and also try to re-compile using command

    php -f bin/magento setup:di:compile

You have to also clear `var/cache,var/generation,var/pagecache,var/di`

**I hope this will help you.**