/rails/.rvm/gems/ruby-1.9.3-p194/gems/premailer-rails3-1.2.0/lib/premailer-rails3/css_helper.rb:15:in`css_for_doc'
from /home/rails/.rvm/gems/ruby-1.9.3-p194/gems/premailer-ra
我正在尝试用Webpacker为Heroku安装一个Rails6应用程序。成功地调用并完成node.js。然后,ruby buildpack启动,安装所有的ruby宝石并“检测rake任务”,在此期间它运行rake资产:预编译。CLI for webpack must be installed.我很确定我需要跑
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