Rails和active_storage：无法加载`Rails.config.active_storage.service`：（RuntimeError）缺少“ S3”的服务适配器

Question

当所有配置正确时，我在控制台中看到此错误

Cannot load `Rails.config.active_storage.service`: (RuntimeError) Missing service adapter for "S3"

Answer 1

gem "aws-sdk-s3", require: false