Intermittently all day I have been receiving this error from the Calendar 
API:

com.google.api.client.googleapis.json.GoogleJsonResponseException: 500 
Internal Server Error
{
  "code" : 500,
  "errors" : [ {
    "domain" : "global",
    "message" : "Backend Error",
    "reason" : "backendError"
  } ],
  "message" : "Backend Error"
}
        at 
com.google.api.client.googleapis.json.GoogleJsonResponseException.from(GoogleJsonResponseException.java:143)
        at 
com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:115)
        at 
com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:40)
        at 
com.google.api.client.googleapis.services.AbstractGoogleClientRequest$1.interceptResponse(AbstractGoogleClientRequest.java:309)
        at 
com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1090)
        at 
com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:407)
        at 
com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:340)
        at 
com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:458)

This is an interface that has been in place and working without error for 
the past 3 months. Any clue on how to trace and debug as this seems to be 
coming from the Google API backend servers? 


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