What is the best way to debug if my connection to ...
# ask-questionss
square-dog-17446
07/11/2025, 4:02 PMWhat is the best way to debug if my connection to growthbook is working once I deploy on vercel? I have the flags sdk adapter working on dev but it seems to not ever show me the variant on my preview build.
square-dog-17446
07/11/2025, 4:03 PMPreview build here
square-dog-17446
07/11/2025, 4:55 PMUsing cloud free plan for now while we evaluate.
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strong-mouse-55694
07/11/2025, 6:54 PMDoes the Vercel toolbar show your flag?
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square-dog-17446
07/11/2025, 7:00 PMIt doesn't
square-dog-17446
07/11/2025, 7:02 PMI have double checked my client key is set in this environment
square-dog-17446
07/11/2025, 7:06 PMNo server side or client side errors only this 404 after I checked the toolbar
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strong-mouse-55694
07/14/2025, 4:48 PMCan you share a bit more on your setup? Is this a server rendered component where the flag is? Are you using edge? Are you using precompute?
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square-dog-17446
07/14/2025, 6:49 PMI think it means I need this well known endpoint added to my app. I didn't see anything about this in y'alls NextJS guide so perhaps that needs to be updated? https://github.com/vercel/flags/blob/main/packages/flags/guides/upgrade-to-v4.md
square-dog-17446
07/14/2025, 6:50 PMSee related post here
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