https://community.esri.com/t5/arcgis-online-questions/an-error-occurred-loading-this-layer-in-map-viewer/m-p/1592419#M63911 <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="L77_0-1741202676425.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/127093i2FADEC7130E2BB55/image-size/medium?v=v2&amp;px=400" role="button" title="L77_0-1741202676425.png" alt="L77_0-1741202676425.png" /></span></P><P>My coworker created a view layer of a hosted feature layer. I tried adding it to a map viewer classic app to view in web app builder but got this error message, "An Error occurred loading this layer".</P><P>I also had the same error in the new map viewer for an existing map. I also had the error viewing the one layer in map viewer in a new map.</P><P>I was using google chrome and tried deleting my history and cache because I saw other people suggest that but I still have the error message.</P><P>I tried using firefox and it didn't work either.</P><P><BR />I clicked inspect in chrome and here are some error messages:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="L77_0-1741203056111.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/127094i43AF4CA161341579/image-size/medium?v=v2&amp;px=400" role="button" title="L77_0-1741203056111.png" alt="L77_0-1741203056111.png" /></span></P><P>My coworker who created the view layer just opened it in map viewer and got the same error that I did, she has a different computer, so I think it is related to the layer itself.</P><P>I have a different dataset that has a view layer, and I tested that view layer and it is working on that one, so I don't know what to do next to troubleshoot.</P><P>&nbsp;</P><P>&nbsp;</P> Wed, 05 Mar 2025 19:49:30 GMT L77 2025-03-05T19:49:30Z https://community.esri.com/t5/arcgis-online-questions/an-error-occurred-loading-this-layer-in-map-viewer/m-p/1592419#M63911 <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="L77_0-1741202676425.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/127093i2FADEC7130E2BB55/image-size/medium?v=v2&amp;px=400" role="button" title="L77_0-1741202676425.png" alt="L77_0-1741202676425.png" /></span></P><P>My coworker created a view layer of a hosted feature layer. I tried adding it to a map viewer classic app to view in web app builder but got this error message, "An Error occurred loading this layer".</P><P>I also had the same error in the new map viewer for an existing map. I also had the error viewing the one layer in map viewer in a new map.</P><P>I was using google chrome and tried deleting my history and cache because I saw other people suggest that but I still have the error message.</P><P>I tried using firefox and it didn't work either.</P><P><BR />I clicked inspect in chrome and here are some error messages:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="L77_0-1741203056111.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/127094i43AF4CA161341579/image-size/medium?v=v2&amp;px=400" role="button" title="L77_0-1741203056111.png" alt="L77_0-1741203056111.png" /></span></P><P>My coworker who created the view layer just opened it in map viewer and got the same error that I did, she has a different computer, so I think it is related to the layer itself.</P><P>I have a different dataset that has a view layer, and I tested that view layer and it is working on that one, so I don't know what to do next to troubleshoot.</P><P>&nbsp;</P><P>&nbsp;</P> Wed, 05 Mar 2025 19:49:30 GMT https://community.esri.com/t5/arcgis-online-questions/an-error-occurred-loading-this-layer-in-map-viewer/m-p/1592419#M63911 L77 2025-03-05T19:49:30Z https://community.esri.com/t5/arcgis-online-questions/an-error-occurred-loading-this-layer-in-map-viewer/m-p/1592445#M63914 <P>It's probably related to the hosted feature layer performance issues on the 'services3' agol hosts:</P><P><A href="https://community.esri.com/t5/arcgis-online-questions/sluggish-feature-service-layer-loading/m-p/1592418#M63910" target="_blank">https://community.esri.com/t5/arcgis-online-questions/sluggish-feature-service-layer-loading/m-p/1592418#M63910</A></P><P>its affecting lots of different behaviors, like layer loading, popups, etc</P> Wed, 05 Mar 2025 20:10:30 GMT https://community.esri.com/t5/arcgis-online-questions/an-error-occurred-loading-this-layer-in-map-viewer/m-p/1592445#M63914 DavidColey 2025-03-05T20:10:30Z