error: Failed dependencies: libnetfilter_cthelper.so.0()(64bit) is needed by conntrack-tools-1.4.4-7.el7.x86_64 libnetfilter_cthelper.so.0(LIBNETFILTER_CTHELPER_1.0)(64bit) is needed by conntrack-tools-1.4.4-7.el7.x86_64 libnetfilter_cttimeout.so.1()(64bit) is needed by conntrack-tools-1.4.4-7.el7.x86_64 libnetfilter_cttimeout.so.1(LIBNETFILTER_CTTIMEOUT_1.0)(64bit) is needed by conntrack-tools-1.4.4-7.el7.x86_64 libnetfilter_cttimeout.so.1(LIBNETFILTER_CTTIMEOUT_1.1)(64bit) is needed by conntrack-tools-1.4.4-7.el7.x86_64 libnetfilter_queue.so.1()(64bit) is needed by conntrack-tools-1.4.4-7.el7.x86_64

这个错误提示是因为 conntrack-tools-1.4.4-7.el7.x86_64 这个软件包所依赖的一些库文件没有安装或者版本过低。你可以尝试用以下命令安装这些依赖库：

sudo yum install libnetfilter_cthelper libnetfilter_cttimeout libnetfilter_queue

如果还有其他依赖问题，可以继续按照错误提示来安装相应的依赖库。如果还无法解决问题，可以尝试升级系统或者找到更高版本的软件包来安装。