參考:https://youtu.be/tSu8xF0A2ek
輸入指令:bin/importmap pin bootstrap ?如果報錯喜滨,
可改為:./bin/importmap pin bootstrap
將config/importmap.rb
pin "@popperjs/core", to: "https://ga.jspm.io/npm:@popperjs/core@2.11.6/lib/index.js"
改為
pin "@popperjs/core", to: "https://unpkg.com/@popperjs/core@2.11.6/dist/esm/index.js"