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1. Technical Usage Notes
This issue describes an issue with loading highly complex geometries using the common package, Fiona. As per https://github.com/Toblerity/Fiona/issues/990 , there is an issue where validity checks can fail even for invalid geoJSONs. Because we have many highly complex geometries (of note that have been reported, NOR_ADM0, NZL_ADM0, PHL_ADM1, JPN_ADM0), it is possible our users may encounter this error - especially if a download is interrupted. This only impacts geoJSON formats. Of note, this seems to (as of 9/9/2021) impact loading these geoJSONs into QGIS in some cases for visualization. Because this is not an error with our data - simply a limitation due to complexity - until this is resolved, if these edge cases are encountered by any users, we recommend using an alternative file format.