使用app/assets/stylesheets/custom.css.scss的第1行输入START，然后查找错误的>. 还要确保确保application.scss是您所期望的.

STart with line 1 of app/assets/stylesheets/custom.css.scss and look for an errant >. Also look to make sure that application.scss is what you expect.

也可以将custom.css.scss重命名为just custom.scss Heck，这可以做到.

Also just rename custom.css.scss to justcustom.scss Heck, that may do it.