InputStream is null exception

[Hasanboy Maxmudov]

Hello I am using IsoFIle to get video duration. My code works on my localhost and I am using Windows. but it isn't working on linux server, it is throwing NullPointerException.
Here is my code:

override fun getDuration(content: ByteArray): Long {

val tempFile = File.createTempFile("test", ".mp4")
tempFile.writeBytes(content)
val isoFile = IsoFile(tempFile)
logger.info("Duration: ${isoFile.movieBox.movieHeaderBox.duration}")
logger.info("TimeScale: ${isoFile.movieBox.movieHeaderBox.duration}")

val duration = isoFile.movieBox.movieHeaderBox.duration / isoFile.movieBox.movieHeaderBox.timescale
logger.info("Actual duration: $duration")

return duration
}

it is throwing exception when loading isoparser2-default.properties file to InputStream in 

PropertyBoxParserImpl class