UnsatisfiedLinkError - com.datumdroid.android.ocr.simple couldn't find "libjpgt.so" -

i'm new android studios , doing ocr http://swlock.blogspot.com/2016/07/ocr-tesseract-2.html image convert text everytime take image app close , got error. can guide me fix error? thanks

e/androidruntime: fatal exception: main   process: com.datumdroid.android.ocr.simple, pid: 2425   java.lang.unsatisfiedlinkerror: com.android.tools.fd.runtime.incrementalclassloader$delegateclassloader[dexpathlist[[dex file "/data/data/com.datumdroid.android.ocr.simple/files/instant-run/dex/slice-slice_9-classes.dex", dex file "/data/data/com.datumdroid.android.ocr.simple/files/instant-run/dex/slice-slice_8-classes.dex", dex file "/data/data/com.datumdroid.android.ocr.simple/files/instant-run/dex/slice-slice_7-classes.dex", dex file "/data/data/com.datumdroid.android.ocr.simple/files/instant-run/dex/slice-slice_6-classes.dex", dex file "/data/data/com.datumdroid.android.ocr.simple/files/instant-run/dex/slice-slice_5-classes.dex", dex file "/data/data/com.datumdroid.android.ocr.simple/files/instant-run/dex/slice-slice_4-classes.dex", dex file "/data/data/com.datumdroid.android.ocr.simple/files/instant-run/dex/slice-slice_3-classes.dex", dex file "/data/data/com.datumdroid.android.ocr.simple/files/instant-run/dex/slice-slice_2-classes.dex", dex file "/data/data/com.datumdroid.android.ocr.simple/files/instant-run/dex/slice-slice_1-classes.dex", dex file "/data/data/com.datumdroid.android.ocr.simple/files/instant-run/dex/slice-slice_0-classes.dex"],nativelibrarydirectories=[/data/app/com.datumdroid.android.ocr.simple-2/lib/x86, /system/lib, /vendor/lib]]] couldn't find "libjpgt.so"       @ java.lang.runtime.loadlibrary0(runtime.java:972)       @ java.lang.system.loadlibrary(system.java:1530)       @ com.googlecode.tesseract.android.tessbaseapi.<clinit>(tessbaseapi.java:44)       @ com.datumdroid.android.ocr.simple.simpleandroidocractivity.onphototaken(simpleandroidocractivity.java:214)       @ com.datumdroid.android.ocr.simple.simpleandroidocractivity.onactivityresult(simpleandroidocractivity.java:138)       @ android.app.activity.dispatchactivityresult(activity.java:6915)       @ android.app.activitythread.deliverresults(activitythread.java:4049)       @ android.app.activitythread.handlesendresult(activitythread.java:4096)       @ android.app.activitythread.-wrap20(activitythread.java)       @ android.app.activitythread$h.handlemessage(activitythread.java:1516)       @ android.os.handler.dispatchmessage(handler.java:102)       @ android.os.looper.loop(looper.java:154)       @ android.app.activitythread.main(activitythread.java:6077)       @ java.lang.reflect.method.invoke(native method)       @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:865)       @ com.android.internal.os.zygoteinit.main(zygoteinit.java:755) application terminated. 

that means *.so files not in *.apk file. follow steps in this stackoverflow question/answer.

you can go build > analyze apk... see if *.so files getting added. obviously, if not in apk, there no reason attempt run app needs *.so files.