gbs install error in ubuntu 18.04

After update 18.04, I cannot install gbs package.

In this case, I solved using below metho.d

/etc/apt/sources.list.d$ cat tizen.list

deb [trusted=yes] http://download.tizen.org/tools/latest-release/Ubuntu_16.04/ / # disabled on upgrade to bionic

After modifying the file. you should step below.

sudo apt-get update

sudo apt-get install gbs

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