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See replies by Nathan Roberts (SN) in this thread: https://learn.microsoft.com/en-us/answers/questions/5955995/microsoft-learn-labs-are-permanently-stuck-on-load
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am unable to continue with the lab exercise. I learn best through practical experience rather than passively highlighting text.
Tag not monitored by Microsoft.
You're not alone with this issue.
See replies by Nathan Roberts (SN) in this thread: https://learn.microsoft.com/en-us/answers/questions/5955995/microsoft-learn-labs-are-permanently-stuck-on-load
Unfortunately, as per https://learn.microsoft.com/en-us/training/support/faq?pivots=sandbox#are-sandboxes-still-available
Sandboxes are no longer available. To complete exercises in training modules, you'll need access to an Azure subscription. If you don't have one yet, you can sign up for a free 30-day Azure trial or a pay-as-you-go subscription.
In this case, fortunately, you don't need an Azure subscription - you can simply install Power BI Desktop on your computer and run https://microsoftlearning.github.io/PL-300-Microsoft-Power-BI-Data-Analyst/Instructions/Labs/03-configure-semantic-model.html
If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.
hth
Marcin