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Esri ArcGIS Connector 3.21.2 breaks Standalone Server reading

  • April 1, 2026
  • 3 replies
  • 68 views

bruceharold
Supporter
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Reading Living Atlas layers anonymously (no authentication) is done using the Standalone Server source type but the 3.21.2 package errors.  This is a publicly shared service you can try:

https://services.arcgis.com/P3ePLMYs2RVChkJx/arcgis/rest/services/USA_Major_Cities_/FeatureServer

Safe are aware of the issue, you can revert to 3.20.2 to avoid the issue.

3 replies

tiffany_deq
Contributor
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  • Contributor
  • April 3, 2026

I am also getting an error when connecting to publicly available feature services (not Living Atlas) using the Standalone Feature Service option with the Esri ArcGIS Feature Service Reader format after upgrading the Esri ArcGIS Connector package to 3.21.2. After removing the package and installing the previous version as recommended above, the error was resolved. 

 

Adding this comment to the thread just to note that the issue is not limited to Living Atlas layers. It seems any anonymous connections will fail with the latest version. 

 

The specific error I receive is:

“ERROR |Message Type: fme::internal::_v0::py::Exception
ERROR |Python Exception <AttributeError>: 'NoneType' object has no attribute 'conn'”

 


bruceharold
Supporter
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  • Author
  • Supporter
  • April 8, 2026

Corrected by 3.21.3


tiffany_deq
Contributor
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  • Contributor
  • April 8, 2026

That’s great to hear. Thanks for passing along ​@bruceharold!