Can not predict on the Centos 7 platform

[z5229889frankwht]

Here are the results. I'm wondering the reason why can not predict the file.
And I cannot find Tesseract.exe in Centos7 .......

`Restoring total_amount parser ./models/parsers/amount/best...
Restoring all ./models/invoicenet/total_amount/best...
Exception: invoice/test.pdf : tesseract is not installed or it's not in your PATH. See README file for more information.

Filename: test.json
predictions are {'total_amount': []}.
idx is 0.
field is total_amount
Traceback (most recent call last):
File "predict.py", line 101, in
main()
File "predict.py", line 92, in main
labels[field] = predictions[field][idx]
`