topic Esri_runtimecore::Common::Null_ptr_exception: Null pointer in ArcGIS Runtime SDK for iOS Questions https://community.esri.com/t5/arcgis-runtime-sdk-for-ios-questions/esri-runtimecore-common-null-ptr-exception-null/m-p/1151047#M7271 <P>I have created an iOS app using ArcScene and displaying 3D images with extruded buildings. I am using navigation control. When I close the ViewController and Go Back then following error occured.</P><P><STRONG>Esri_runtimecore::Common::Null_ptr_exception: Null pointer</STRONG></P><P>I am sharing the Code, Screenshots. &nbsp;Can anybody help me to get rid of this.</P><P>regards,</P><P>Afroz</P> Sun, 06 Mar 2022 07:45:26 GMT AfrozAlam 2022-03-06T07:45:26Z Esri_runtimecore::Common::Null_ptr_exception: Null pointer https://community.esri.com/t5/arcgis-runtime-sdk-for-ios-questions/esri-runtimecore-common-null-ptr-exception-null/m-p/1151047#M7271 <P>I have created an iOS app using ArcScene and displaying 3D images with extruded buildings. I am using navigation control. When I close the ViewController and Go Back then following error occured.</P><P><STRONG>Esri_runtimecore::Common::Null_ptr_exception: Null pointer</STRONG></P><P>I am sharing the Code, Screenshots. &nbsp;Can anybody help me to get rid of this.</P><P>regards,</P><P>Afroz</P> Sun, 06 Mar 2022 07:45:26 GMT https://community.esri.com/t5/arcgis-runtime-sdk-for-ios-questions/esri-runtimecore-common-null-ptr-exception-null/m-p/1151047#M7271 AfrozAlam 2022-03-06T07:45:26Z Re: Esri_runtimecore::Common::Null_ptr_exception: Null pointer https://community.esri.com/t5/arcgis-runtime-sdk-for-ios-questions/esri-runtimecore-common-null-ptr-exception-null/m-p/1151432#M7275 <P>Do you get the same error if you skip the elevation source?&nbsp;<A href="https://alkhazna.gisqatar.org.qa/server/rest/services/CGISRASTER/QATAR_2021_09_C050_PLE/ImageServer" target="_self"><SPAN>https://alkhazna.gisqatar.org.qa/server/rest/</SPAN><SPAN>services/CGISRASTER/QATAR_2021_09_C050_PLE/</SPAN></A><SPAN><A href="https://alkhazna.gisqatar.org.qa/server/rest/services/CGISRASTER/QATAR_2021_09_C050_PLE/ImageServer" target="_self">ImageServer</A> is not accessible to me to test against.</SPAN></P> Mon, 07 Mar 2022 19:13:39 GMT https://community.esri.com/t5/arcgis-runtime-sdk-for-ios-questions/esri-runtimecore-common-null-ptr-exception-null/m-p/1151432#M7275 Nicholas-Furness 2022-03-07T19:13:39Z