I had this issue while running some of the cells training the neural networks where it was supposed to just print the performance of the models and plot the cost, but instead it printed a whole bunch of meaningless data which made the Lab run really slowly. This happened for several of the cells at …

Update: I’ve noticed that when I open the Lab and try some things to make the notebook appear, it will also affect the Coursera course page which freezes in another window.

Please try getting a fresh copy of your assignment. If this doesn’t work, share a screenshot with us.

Didn’t work, unfortunately. Here is what I see when I click “Launch lab” from the course page: [image] After a short while the screen turns completely blank.

You mean after getting a fresh copy, you still face this issue? If so, @lucas.coutinho , @chris.favila , could you please guide him further?

Meanwhile, please try logout and then login, Incognito Window, different browser, or a different device.

Yes. I just noticed this in the bottom left corner. Don’t know if it’s relevant to the issue: [image]

I am unable to try a different device, but all the other methods were to no avail.

Please wait for Lucas or Chris to respond.

Hello @Terneborn , Please follow Chris’s instructions . What I want to share is that, because I saw the following screenshot of yours, next time, try if you could click “File > Open” to open the file browser. If so, you should be able to shut down the notebook there, rename the notebook, then you sh…

Programming Assignment: Optimization Methods

Course Q&A Deep Learning Specialization Improving Deep Neural Networks: Hyperparameter tun

chris.favila November 13, 2025, 3:33pm 10

Hi! The lab is working fine on my end. If the problem persists, can you direct message me your lab ID? You can click the question mark icon at the top right. Lab ID is at the bottom. You can click my name then the blue Message button to send a DM. Thanks!

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Programming Assignment: Optimization Methods

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