我在浏览器控制台中遇到错误：::
[program:modbot]
command=/Users/Jonathan/.virtualenvs/modbot/bin/python3.7 "/Users/Jonathan/Library/Mobile Documents/com~apple~CloudDocs/Code/modbot/modbot.py"
当我检查元素时，我会看到::
glyphicons-halflings-regular.woff2:1 Failed to load resource: the server responded with a status of 404 (Not Found)
glyphicons-halflings-regular.woff:1 Failed to load resource: the server responded with a status of 404 (Not Found)
glyphicons-halflings-regular.ttf:1 Failed to load resource: the server responded with a status of 404 (Not Found)
这是什么意思？
inspect元素中的css显示：：
::before == $0
a[aria-expanded="false"]::before, a[aria-expanded="true"]::before {
content: '\e259';
display: block;
position: absolute;
right: 20px;
font-family: 'Glyphicons Halflings';
font-size: 0.6em;
}
a[aria-expanded="true"]::before {
content: '\e260';
}
是什么意思； ？
答案 0 :(得分：0)