Endpoints of AWS services in China (region cn-north-1) are hosted under a different domain, i.e. *.amazonaws.com.cn instead of *.amazonaws.com. See AWS regions and endpoints - Beijing
This issue was fixed in the latest release of fog (i.e. 1.38.0), but sluice has a hard-coded dependency on fog 1.25 which fails the resolution of region cn-north-1.
Endpoints of AWS services in China (region cn-north-1) are hosted under a different domain, i.e. *.amazonaws.com.cn instead of *.amazonaws.com. See AWS regions and endpoints - Beijing
This issue was fixed in the latest release of fog (i.e. 1.38.0), but sluice has a hard-coded dependency on fog 1.25 which fails the resolution of region cn-north-1.