validator.w3.org; 23 Errors, 6 Warnings

How can i fix this please?

Lines 382 thru 400 are all HTML inside widgets. The simple answer is write proper HTML. The Validator explains clearly the issues.

This should provide more info of the validation errors: https://validator.w3.org/docs/errors.html

Please don’t hijack support off other people’s threads.

My error report
Above is my error report i was hoping you’ll help me fix the above mentioned errors, the errors seem to decrease to 21 when i deactivate Jetpack plugin, also it looks like all the errors are from widgets (sidebar) How can i fix this please? where do i go to fix the above errors please?

If i deactivate all plugins that are sidebar plugins the error disappears. It seems to be an error in my widget html but i don’t know where to go to correct this. I’ve checked individual widgets codes they seem fine. Help me please. Thanks

What widget is creating it?

Jetpack is one of them. The thing is any widget i add to sidebar shows the error. Jetpack when i add the Jetpack “Subscription” widget. Please help.

Does this happen if you switch the theme? If you add a widget and it creates the error it almost sounds like it could be the theme causing the issue and not a plugin. Please try switching themes to see if that resolves the issue?

I just tried switching theme and there are still errors. though the errors seems to reduce when i use 2015 or 2014 WordPress theme. note they just reduce.