3558169 - Error "Unable to initialize GTK+, is DISPLAY set properly?" while upgrading DP Agent - SAP SDI

While trying to upgrade the Data Provisioning Agent (DP Agent) on Linux, an error is faced:

./hdbsetup
Error: Unable to initialize GTK+, is DISPLAY set properly?

SAP HANA smart data integration all versions

dpagent, root, update, hdbsetup , KBA , HAN-DP-SDI , SAP HANA smart data integration (SDI) , Problem

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