Multipart post request fails randomly with error java.io.IOException: insufficient data written

[Blu-Dragon]

I have an application that sends data to an API in a multipart post request. The application works properly throughout the day but it fails sometimes randomly or multiple times consecutively. The error log is as follows:

java.io.IOException: insufficient data written
at sun.net.www.protocol.http.HttpURLConnection$StreamingOutputStream.close(HttpURLConnection.java:3558)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1521)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:347)
at scalaj.http.HttpRequest.scalaj$http$HttpRequest$$doConnection(Http.scala:367)
at scalaj.http.HttpRequest.exec(Http.scala:343)
at scalaj.http.HttpRequest.asString(Http.scala:491)

That occurs at the line where the post request takes place which is:

val response = Http(MY_END_POINT).header("SOME_HEADER",SOME_VALUE).header("SOME_HEADER", SOME_VALUE).header("SOME_HEADER", SOME_VALUE).postMulti(MultiPart("SOME_VALUE", "", "SOME_VALUE", "SOME_VALUE"), MultiPart("SOME_VALUE", "", "SOME_VALUE", SOME_VALUE), MultiPart("SOME_VALUE", "", "SOME_VALUE", SOME_VALUE)).auth(USER, PASS).option(HttpOptions.connTimeout(10000)).option(HttpOptions.readTimeout(120000)).asString

I haven't set context length anywhere for the post request and the failure happens randomly.