Encountered the Custom Fields retrieval error just like what is shown below?
03 Mar 2019 02:53:10
Error on sync: Error on custom fields retrieval. Failed to send request to https://na76.salesforce.com/services/Soap/u/18.0/00D410000011MVf. Unexpected end of file from server
The error is thrown from the Constant Contact API side, yet these types of errors rectify themselves on subsequent syncs.
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