How do I change huge spacing in this sentence in this paragraph in InDesign?

Hi @James3669094303ct ,

thank you for the sample InDesign document.

Alright, I had a missing font error about Roboto font when I opened your sample InDesign document and activated the font through Adobe Fonts. That gave the composition engine something like a "kick" and the composition turned out this way:

So the question is what kind of Roboto font you are currently using. If one from Google Fonts I'd test an activated Roboto from Adobe Fonts. But for that test you have to uninstall the Roboto font files from your system.

Regards,
Uwe Laubender
( Adobe Community Expert )

By turning on hyphenation for the applied ParaStyle - or locally for the paragraph. 

https://helpx.adobe.com/uk/indesign/using/text-composition.html

Can you turn on "Show hidden characters" and post your screenshot again? It looks like you have some extra spaces?