I’m receiving this error on trying to train the model in Image Captioning Project. How do I resolve this issue?
I’m providing the link of the Jupyter Notebok as follows :
https://drive.google.com/file/d/1xMscd7YLnPsH42K287duTZpvJ3bzCjkc/view?usp=sharing
Please reply! 
hey @Jalaanchal-Tewari-1816244721737412 ,
I am really sorry to reply you so late.
Just give me some time , i am working on your codes and will clear your doubt very soon.
Thank You 
.
hey @Jalaanchal-Tewari-1816244721737412 ,
can you please provide me with links to files
Flickr_8k.trainImages.txt and Flickr_8k.testImages.txt.
I am not able to find them.
hey , @Jalaanchal-Tewari-1816244721737412 ,
I am really sorry to be so late , actually i was off for sometime due to my exams .
Will just let you know about your doubt.
Thanks for waiting.
hey @Jalaanchal-Tewari-1816244721737412 ,
Thank You for waiting.
There was some error in your data generator , although i also didn’t what the actual error was.
https://drive.google.com/file/d/1xMscd7YLnPsH42K287duTZpvJ3bzCjkc/view?usp=sharing
Have a look a at this link , i have modified the generator output a bit and also named model input layers . And this made your code working.
I hope this helps you. Have a look at it , if there is any doubt , you can ask me.
I see that you changed the yield value in generator from
[[np.array(X1), np.array(X2)], np.array(y)]
(let’s call this yield value 1)
to
{“image_input”:np.array(X1), “caption_input”:np.array(X2)} , np.array(y)
(let’s call this yield value 2)
and then, the fit function worked.
When I used the yield value 1 in my local Jupyter Notebook, the fit function worked but when I used it in Google Colab, it threw a ValueError : No gradients provided for any variable.
The fit function works in Colab only if I use yield value 2.
Any idea why this is so?
I don’t know the exact reason , but it might be due to different versions of tensorflow and keras.
I am also getting the same error in colab how to solve this?
hey @Kishu1,
have a look at this https://drive.google.com/file/d/1xMscd7YLnPsH42K287duTZpvJ3bzCjkc/view?usp=sharing.
If still you are stucked , then i would request to kindly raise a new doubt on the discussion forum.
Thank You .
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hey @Kishu1 ,
i am facing issue in my notebook .
So , i would request you too kindly create a new doubt for this and share your notebook along with it.
So that i am able your doubt more effectively.
Thank You .
I have found the error
Thanks
Thats good.
All the best and Happy Learning .
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