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File bookFile = new File(FileName);

Log.i("message", FileName);
        File bookFile = new File(FileName);
        Log.i("message", bookFile.toString());
        if(bookFile.exists()) {
            flag_find_book = true;
            pdfViewBook.fromFile(bookFile)
                    .defaultPage(pageNumber)
                    .onPageChange(ReadBookFragment.this)
                    .enableAnnotationRendering(true)
                    .onLoad(this)
                    .scrollHandle(new DefaultScrollHandle(getActivity()))
                    .enableAntialiasing(true)
                    .spacing(10)
                    .enableAntialiasing(true)
                    .pageFitPolicy(FitPolicy.WIDTH)
                    .nightMode(toggleButtonNightModReadPDF.isChecked())
                    .load();
        }
        else {
            textViewTimerRead.setVisibility(View.INVISIBLE);
            toggleButtonNightModReadPDF.setVisibility(View.INVISIBLE);
            Toast.makeText(getActivity(), getResources().getString(R.string.BookNotFound), Toast.LENGTH_LONG).show();
            flag_find_book = false;
        }

D/HWUIExtension: MTKProgramCache.generateProgram: 103079215104
D/HWUIExtension: createProgram 0x0000001800000000, binary 0x7a4583cf, length 11105, format 37168 within 942ns
D/com.shockwave.pdfium.PdfiumCore: Starting PdfiumAndroid 1.9.0
I/message: /document/3C49-7D73:Books/Выйди из зоны комфорта.pdf
    /document/3C49-7D73:Books/Выйди из зоны комфорта.pdf
I/zygote: Do partial code cache collection, code=118KB, data=116KB
I/zygote: After code cache collection, code=118KB, data=116KB
    Increasing code cache capacity to 512KB
V/FA: Inactivity, disconnecting from the service
D/ViewRootImpl[Toast]: hardware acceleration = true , fakeHwAccelerated = false, sRendererDisabled = false, forceHwAccelerated = false, sSystemRendererDisabled = false
E/libc: Access denied finding property "ro.sf.lcd_density"
E/InputTransport: ro.sf.lcd_density must be defined as a build property
I/Toast: Show toast from OpPackageName:com.toprograms.bookstat, PackageName:com.toprograms.bookstat
W/ograms.bookstat: type=1400 audit(0.0:29912): avc: denied { read } for name="u:object_r:graphics_config_prop:s0" dev="tmpfs" ino=1332 scontext=u:r:untrusted_app:s0:c512,c768 tcontext=u:object_r:graphics_config_prop:s0 tclass=file permissive=0
D/Surface: Surface::allocateBuffers(this=0x8a37d000)
D/Surface: Surface::connect(this=0x8a37d000,api=1)
D/GraphicBuffer: register, handle(0x9d392e40) (w:296 h:95 s:320 f:0x1 u:b00)
D/Surface: Surface::disconnect(this=0x8a37d000,api=1)
D/GraphicBuffer: unregister, handle(0x9d394580) (w:296 h:95 s:320 f:0x1 u:b00)
D/View: [Warning] assignParent to null: this = android.widget.LinearLayout{a5fdbab V.E...... ......ID 0,0-296,95}
I/zygote: Compiler allocated 5MB to compile void android.view.ViewRootImpl.performTraversals()
I/zygote: The ClassLoaderContext is a special shared library.
W/System: ClassLoader referenced unknown path: system/framework/mediatek-cta.jar

new File(uri.getPath());