Sophia here from Shopify. Welcome to the Shopify Community!
Are you able to share a screenshot of the error message here (or copy and paste the error message) so that myself or others in the community can help you find a solution?
If this is an app you're installing from the Shopify App Store, you can find the app developer's contact information on their app's listing page or click the Get support option on that page to reach them. Just in case we aren't able to find more information based on the specifics of the error message, contacting the app developer is the next best step.