magento2 – Show invalid block type after disabling TemplateMonster_FilmSlider

I'm working on a project Magento 2.2 and having TemplateMonster theme.

I want to disable FilmSlider (which is available in the theme) and I wanted to show some videos.

I disabled that specific TemplateMonster_FilmSlider when using the command and after compiling it, it shows an invalid block type error, etc.

Can someone guide me in what step I did not follow or need to do?

Thank you