Symptom
When sdkmgr is used on Linux, the following error is displayed: "Failed to request URL https://devecostudio-dre.op.hicloud.com/sdkmanager/v5/hos/getSdkList".

Solution
This issue occurs when the country code for Linux is not set to China.
cd ${root directory of sdkmgr}/sdkmanager/bin 
vim sdkmgr

