3537727 - Error "Server Error. No json root element in response. This can be due to a json parsing issue" while opening a story - SAP Analytics Cloud

In SAP Analytics Cloud stories, while trying to display hierarchy dimension members, the following error appears:

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"Server Error. No json root element in response. This can be due to a json parsing issue"
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When recording a network trace (HAR file, KBA 2280022), there is a GetResponse call failing with status code 500 Internal Server Error.

The error is also reproducible in transaction RSRT. The following dump is also generated when running the GetResponse call with status code "500 Internal Server Error":

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Runtime Errors GETWA_NOT_ASSIGNED
The current ABAP program "CL_RSR_RRK0_PARTITION=========CP"
"MERGE_SELDR_HIER_INTO_SELDR" 
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"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."

• SAP Analytics Cloud
• SAP Business Warehouse
• SAP BW4/HANA
• SAP NetWeaver

GETWA_NOT_ASSIGNED, CL_RSR_RRK0_PARTITION, MERGE_SELDR_HIER_INTO_SELDR, json parsing issue, No json root element in response , KBA , BW-BEX-OT-BICS-INA , BW INA provider , BW-BEX-OT-OLAP-DOC , Document Services , LOD-ANA-LDC-BW , SAC Live Data Connection BW , Known Error