Please Help!!! Validator.w3.org; 23 Errors, 6 Warnings

Hello, just looked up my site on https://validator.w3.org turns out there are 23 errors and 6 warnings. How can i fix this please? i need urgent help. Tried signing up for Google adsense and was rejected i believe the above errors are part of the reason, i intend to re-apply ASAP. I’m Using “Patus” free wordpress theme, link to site. Thanks

The validator explain Lines 382 through 400 are all HTML inside widgets. But i don’t know how to get this fixed, the error seems to be from my widget. When i remove my sidebar widgets the errors seem to reduce. Please help. Thanks