No route matches [GET] "/assets/application.js & No route matches [GET] "/assets/application.css

I am moving away from Webpack to Esbuild, using jsbundling-rails and cssbundling-rails.

Rails version is 6.1.5

Everything seems to be working fine, but in my logs I get:

ActionController::RoutingError (No route matches [GET] "/assets/application.js-71bd51ca6859614cd46b64034f1484dfa019cb295ac852a804b8c30fc2f9ba0b.map"):

ActionController::RoutingError (No route matches [GET] "/assets/application.css-3b0754679fcb32c2b76c56e443ad8651a084344d65ce5995fe745125487fbda9.map"):

I can't work out what process is still looking for files at these locations.

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