root@hi3798mv100:~# nginx -t
nginx: [emerg] dlopen() "/usr/share/nginx/modules/ngx_http_dav_ext_module.so" failed (/usr/share/nginx/modules/ngx_http_dav_ext_module.so: cannot open shared object file: No such file or directory) in /etc/nginx/modules-enabled/50-mod-http-dav-ext.conf:1
nginx: configuration file /etc/nginx/nginx.conf test failed
root@hi3798mv100:~# mkdir -p /var/log/nginx
root@hi3798mv100:~# touch /var/log/nginx/error.log
root@hi3798mv100:~# touch /var/log/nginx/access.log
root@hi3798mv100:~# systemctl enable nginx
Synchronizing state of nginx.service with SysV service script with /lib/systemd/systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install enable nginx
root@hi3798mv100:~# systemctl restart nginx
Job for nginx.service failed because the control process exited with error code.
See "systemctl status nginx.service" and "journalctl -xe" for details.
root@hi3798mv100:~# systemctl restart nginx
Job for nginx.service failed because the control process exited with error code.
See "systemctl status nginx.service" and "journalctl -xe" for details.
求怎么解决。