Could not find mapImageProviderDescription

Problem

When creating the report sew_awk_wastewater_node_1_sheet_rpt, the following message appears:

http://mein-server.tld/geonis/en/report/projekt_sew/datenquelle_sew/generateReport?report=sew_awk_abwasserknoten_1_sheet_rpt&id=1&outputFormat=pdf

{"faultstring":"A condition was expected to be true, but was false [could not find mapImageProviderDescription with name [mxd],
available [web map]].","faultcode":"G_GAssertException","logtimestamp":"LOG_SOE_1565263191","istranslated":false,"httpcode":500,"stacktrace":""}

Cause

The map source in the corresponding report is not defined.

Solution

Set map source via report designer

Example → https://resources.geocom.ch/documentation/protected/others/2017/application/GEONIS_server/2017/DE/webhelp/index.html?gns_report_designer_verwenden.htm