Contact is not indexed if its Avatar facet resolution exceeds a value of 170 x 170


Description

A contact might not be indexed if its Avatar facet resolution exceeds the value of 170 x 170. The following message can be found in the IndexWorker logs:

[Error] The attempt to recover from previous failure has not been successful. There will be another attempt. Attempts count: 7215
System.FormatException: Invalid length for a Base-64 char array or string.
   at System.Convert.FromBase64_Decode(Char* startInputPtr, Int32 inputLength, Byte* startDestPtr, Int32 destLength)
   at System.Convert.FromBase64CharPtr(Char* inputPtr, Int32 inputLength)
   at System.Convert.FromBase64String(String s)
   at Sitecore.XConnect.Serialization.XObjectReader.ReadPrimitive(JsonReader reader, XdbPrimitiveTypeKind typeKind)
   at Sitecore.XConnect.Serialization.XObjectReader.ReadXObject(XdbType expectedType)
   at Sitecore.Xdb.Collection.Search.Solr.SolrResults.JsonParseExtensions.ToXObject(JObject jobject, XdbModel model, XdbType expectedType)
   at Sitecore.Xdb.Collection.Search.Solr.SolrResults.JsonParseExtensions.ToXObject(JObject jobject, XdbModel model, EntityType entityType, String facetKey)
   at Sitecore.Xdb.Collection.Search.Solr.DataRecordMapper.CreateFacetPropertyWithLastModified(KeyValuePair`2 facet)
   ...

Solution

To resolve the issue, download and install the hotfix compatible with the affected product version:

Be aware that the hotfixes were built for the specific Sitecore XP versions and must not be installed on other Sitecore XP versions or in combination with other hotfixes. If any other hotfixes have already been installed on a certain Sitecore XP instance, send a request for a compatibility check to Sitecore Support.

Note that the ZIP file contents must be extracted to locate installation instructions and related files inside. The hotfix must be installed on a CM instance and then synced with other instances using standard development practices.