What commands did you issue?

The location of logs depends on how the cloud is configured. A typical location would be /var/log/glance, but if you use DevStack, all logs are probably under /opt/stack/logs.

in /var/log/glance every things is ok. but when use url to download an image by qcow2 format, i faced by below error in horizon: TypeError: Cannot read property 'data' of undefined

and when use a wget for download an image (for example cirros) , it`s done, but by executed bellow command, image go to active state but image size =0 byte show.

openstack image create "cirros" \
  --file cirros-0.3.5-x86_64-disk.img \
  --disk-format qcow2 --container-format bare \
  --public

i install openstack by instruction in below link: https://docs.openstack.org/newton/install-guide-ubuntu/glance-install.html (link)

You say everything is ok in /var/log/glance, but if the cirros image is not copied to /var/lib/glance/images, there should be a log message that explains why. Is there a typo in the [glance_store] section in glance-api.conf? Does this directory exist and is it writable? Is there enough space?