'unexpected error' while training Object Detection model - CreateML - swift

I've been attempting to train an object detection model through CreateML to incorporate into my iOS application, however I am running into an issue that occurs somewhere near the 300th iteration of the training. I receive a pop-up saying "Unable to resume this training", "Discard current progress or duplicate this model source to restart training" along with the error message: "Unexpected error" in the left hand corner of the window. Here is the screenshot.
Does anyone know what could possibly be causing the error and or how to fix it? I appreciate the help!
Cheers,
Keil

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2010-03-18 10:55:41.785 CrData[1605:4603] Unresolved error Error Domain=NSCocoaErrorDomain Code=513 UserInfo=0x50448d0 "Operation could not be completed. (Cocoa error 513.)", {
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update
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