Qlik NPrinting June 2018 Receives GRPC Error on Distribution Task or When Previewing a Report in DesignerArticle Number: 000058253 | Last Modified: 2018/11/29
The below error may be seen for a Publish Tasks that contain images, or can also be encountered when previewing a report in Designer:
ERROR: CEF rendering exception. GRPC rendering request failed, error: Value cannot be null. Parameter name: value. August 28, 2018 12:36:36 PM Warn WARN: error during report generation: Object Pphp of Sense app a3a03faa-3c7c-4f01-974e-9e9f7183a663 failed to render. ERROR: CEF rendering exception. GRPC rendering request failed, error: Value cannot be null. Parameter name: value. August 28, 2018 12:36:36 PM Info Finished content resolution for report a84d8a6b-5118-4643-b5ce-34b6997e5ab0 August 28, 2018 12:36:36 PM Info Starting content production August 28, 2018 12:36:36 PM Info Finished content production
- Qlik NPrinting June 2018
The issue is due to a session expiration on the NPrinting Qlik Sense resolver (a resolver is a QlikView/Qlik Sense data connector).
Stop Scheduler and Engine service for NPrinting
Open C:\Program Files\NPrintingServer\NPrinting\Scheduler\scheduler.config
Open as Administrator
Add below option to end of the file just before the invalid selection
<add key="force-unused-resolvers-closure-policy" value="1" />
Save as .config not as .txt file
Start the Scheduler and Engine service
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