tesseract recognition low confidence or wrong result

Im working with Tesseract library.

I have tried the demo and I got the expected results correctly.

but when I tried it on my localmachine I got a way different result.

this is the image Im using

and this is my code

Tesseract.recognize(image_object), {lang: 'eng'}).progress(function  (p) { console.log('progress', p)    })
   .then(function (result) { console.log('result', result) })

the result from the demo is 0.08 and the result from my localmachine is 003

EDIT: here is another image we can try:

this one works 100% on the demo, but local machine result is "o ts"

from tesseract recognition low confidence or wrong result