In the Qlik NPrinting web console under 'Apps>Connections', if using "http://" rather than "https://" within your NPrinting Connections to Qlik Sense application(s), a metadata error similar to the one below may be encountered:
"Object DBbpbc of Sense app 7d789264-16f6-41b5-8dce-7670e779345f failed to render. ERROR: CEF rendering exception. GRPC rendering request failed ---> request with id 72de0741a840422ca95690ba27f2a750 failed with remote error ErrorGenericResult, task CEF_ON_JS_ERROR_MESSAGE_RECEIVED, result: ERROR_JS_FAILURE_RESULT, a JavaScript call failed, , last js call: qlikPrintingService.render("7d789264-16f6-41b5-8dce-7670e779345f","np17-1eb48465-0512-4ca6-9ff3-44ebfca8ba84","object","DBbpbc")"
NOTE: If the conditions above do not apply to your environment, then it is not necessary to perform the specified update/workaround
Environments that may be affected:
Qlik NPrinting, April 2019 and earlier version when used with Qlik Sense September 2018 or higher.
Cause:
An incompatibility was discovered in Qlik Sense Enterprise September 2018 or higher. Issue occurs when http:// is used in the NP connection Proxy Address field instead of https://
Resolution:
This issue is solved in the June 2019 Release of Qlik NPrinting and may be viewed in the companion NPrinting June 2019 product release notes
Please upgrade preferably to the latest version of NPrinting to resolve the issue.
Workaround(s):
Use HTTPS:// rather than HTTP:// in the NP connection Proxy Address field
or
Stop the NPrinting Engine service
On your NPrinting Engine computer(s), locate the file c:\Program Files\NPrintingServer\NPrinting\Engine\engine.config
Within the "appSettings" section of this config file,add a line<add key="webrenderer-mashup-qs" value="wssecure=1" />
Repeat process for each NP Engine if you have more than one NPrinting Engine installed
