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RAILS_ENV=development environment is not defined in config/webpacker .yml, falling back to production environment ?? RAILS_ ENV = development ???config / webpacker .yml?????????????????????????, RAILS_ ENV = development environment is not defined in config / webpacker. yml, falling back to production environment create config / webpacker . yml Copying webpack core config, 11/12/2019 · Latest release re-introduces #663 >> rails webpacker:install rails webpacker:install RAILS_ENV=development environment is not defined in config/webpacker .yml, falling back to production environment rails aborted! Webpacker configuration …
RAILS_ENV=development environment is not defined in config/webpacker .yml, falling back to production environment Then you probably need to update your yarn version . Use the yarn docs to upgrade, and then run:
