Cannot convert a symbolic Tensor - Cannot even initialize the Predictor object about calamari

[andbue]

I have not seen this error before, it might be from some tensorflow version mismatch? It looks as if you're trying to run it on colab. I've just tested it myself:

!pip install opencv-python-headless==4.1.2.30 # some problems with other version, see https://stackoverflow.com/questions/70537488/cannot-import-name-registermattype-from-cv2-cv2
!pip install calamari-ocr
!wget https://github.com/Calamari-OCR/calamari_models/raw/master/uw3-modern-english/0.ckpt.h5
!wget https://github.com/Calamari-OCR/calamari_models/raw/master/uw3-modern-english/0.ckpt.json
predictor = Predictor.from_checkpoint(
    params=PredictorParams(),
    checkpoint='0.ckpt')

So far no errors. Had to restart runtime after installing other numpy version.

[D3nii]

@andbue I was taking that into account before too, but magically, it works now!

Thanks a lot!