Your TypeScript project can’t find
expo/tsconfig.base, although you are sure it is there (besides, the project works just fine). Here’s the fix.
You probably use VS Code, am I right? Then, restart your IDE. Yes, simple as that…
Did you know that I made an in-browser image converter, where you can convert your images without uploading them anywhere? Try it out and let me know what you think. It's free.