These two mistakes are really just one mistake， This is because the following file @babel/runtime cannot be found。
I am getting this error:
ERROR in ./src/main.js Module not found: Error: Can‘t resolve ‘@babel/runtime/helpers/classCallCheck‘ in ‘C:\Users\ASUS\Desktop\vue\webpack-study2\src‘ @./src/main.js 1:0-68 13:2-17 ERROR in ./src/main.js Module not found: Error: Can‘t resolve ‘@babel/runtime/helpers/defineProperty‘ in ‘C:\Users\ASUS\Desktop\vue\webpack-study2\src‘ @@ ./src/main.js 2:0-68 17:0-15
So what we‘re trying to figure out is why can‘t we find those two files， because we did not install @babel/runtime。
原文：https://www.cnblogs.com/zengsf/p/10962669.html