poor barcode scan for type of code 39

[roknil]

I'm developing in android, and use barcode scan in my application. I'm using the mlkit vision library with this versions:
implementation 'com.google.mlkit:barcode-scanning:17.2.0'
implementation 'com.google.android.gms:play-services-mlkit-barcode-scanning:18.3.0'

when scanninh barcode type "code-39" it detect many incorrect values.
How can i get a solution for this issue?

Android Platform.