uniapp | Compilation error after updating with npm update

Problem description

Invalid options object. Sass Loader has been initialized using an options object that does not match the API schema.

In the folder where the error was reported, I found that there is a sass-loader dependency package in the directory, because I use uview in my project and have installed sass-loader, so that in node_modulesThere are two sass-loaders, so is it better to delete one?

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Solution:

Try to delete the sass-loader inside, vue-cli-plugin-uni can't find the available dependencies and an error will be reported.After deleting the external sass-loader, the node-sass used in my project is incompatible with the internal sass-loader.Finally, after I deleted the sass-loader inside, I copied the sass-loader outside to @dcloudio/vue-cli-plugin-uni/packages/, which was successfully resolved.