The package is invalid. It may contain entries using invalid characters, as an example using '\' as a path separator is not allowed in Firefox. Try to recreate your add-on package (ZIP) and make sure all entries are using '/' as the path separator.
软件包不合规。它可能包含有无效字符，例如，在 Firefox 中不允许使用“\”作为路径分隔符。请尝试重新创建您的附加组件包 (ZIP) 并确保所有条目都使用“/”作为路径分隔符。