It looks like you are trying to use a JavaScript transpiler (such as Babel) to compile your code, but are encountering an error. This error message indicates that you need to configure your build process to use an additional loader to handle the output of the current loaders.

The exact steps to fix this error will depend on the specific build tools and configuration you are using. Some common solutions include:

1. Make sure that you have installed and configured the necessary loaders for your project. For example, if you are using webpack, you may need to install and configure loaders such as babel-loader or ts-loader.
2. Check your project’s build configuration (e.g. webpack.config.js) and make sure that you have specified the correct loaders for your project.
3. Make sure that you have specified the correct file extensions for the loaders to process. For example, if you are using babel-loader, you may need to make sure that it is configured to process files with a .js or .jsx extension.
4. If you are using a custom build configuration, make sure that it is correctly set up to handle the output of the loaders.

If you are still having trouble after trying these steps, you may want to consult the documentation for your build tools and/or seek help from other developers or online resources.