multiple slots with same name

[marjandejyab]

According to Evan You's answer in the following link "In the new syntax you must group elements that belong to the same slot under the same template."
vuejs/vue#9449 (comment)
It causes errors in the following line:

framevuerk/src/components/Slider.vue

Line 118 in 74733c7

return this.$slots.content.length;