I am currently working on this module and have reached the following step:

Next, you preview the GitHub data results in the browser.
To open the GitHub dataset in the BigQuery web UI, click this link:https://bigquery.cloud.google.com/table/bigquery-public-data:github_repos.commits
Click Preview to see a preview of the data.

When I click on the link, I get the following error message: Unable to find table: bigquery-public-data:github_repos.commits

The table doesn't load at all. Any suggestions?

I am working on the App Customization Specialist Superbadge and this one has me baffled. Here is the part I'm stuck on...

Quick Self Sign Up
Maria asked for a quick way for users to sign themselves up for a Shift directly from a Volunteer Shift record. Your solution was an action with the label Sign Me Up. To keep it simple there should be no fields on the pop-up. Instead the action automatically sets the Volunteer to the user clicking the button, changes the status to Confirmed, and assigns the currently viewed Shift as the new record's Volunteer Shift. Once the action is done show the friendly message "Congratulations, you are signed up!".

Based on what I'm reading, they seem to be asking me to create a Quick Action button that creates a new record with the necessary fields set to default values. The problem is that two of the fields that are required are Lookups that I was required to create in the first challenge. One to supply the User Name and another to supply the Volunteer Shift Name. Quick Action default values can't populate Lookup fields, right? I tried creating a flow, but you can't trigger an autolaunched flow from a Quick Action, only Screen Flows. The challenge wants one button click and it's done. Can someone tell me what I'm missing here?

I am working on the App Customization Specialist Superbadge and this one has me baffled. Here is the part I'm stuck on...

Quick Self Sign Up
Maria asked for a quick way for users to sign themselves up for a Shift directly from a Volunteer Shift record. Your solution was an action with the label Sign Me Up. To keep it simple there should be no fields on the pop-up. Instead the action automatically sets the Volunteer to the user clicking the button, changes the status to Confirmed, and assigns the currently viewed Shift as the new record's Volunteer Shift. Once the action is done show the friendly message "Congratulations, you are signed up!".

Based on what I'm reading, they seem to be asking me to create a Quick Action button that creates a new record with the necessary fields set to default values. The problem is that two of the fields that are required are Lookups that I was required to create in the first challenge. One to supply the User Name and another to supply the Volunteer Shift Name. Quick Action default values can't populate Lookup fields, right? I tried creating a flow, but you can't trigger an autolaunched flow from a Quick Action, only Screen Flows. The challenge wants one button click and it's done. Can someone tell me what I'm missing here?

This is the trailhead challenge I'm working on.
Create a report of Opportunities grouped by Type. Then follow the dashboard and share a snapshot on Chatter.
Name the report 'Opportunities by Type' and save it to the 'Unfiled Public Reports' folder.
The report must be of type Opportunities.
The report format must be a Summary report.
The report must be grouped by 'Type'.
The date range should be for All Time.
You can include any columns you like, but must include 'Amount' as one of the columns.
Create a dashboard named 'Opportunities Dashboard' and save it to the 'My Personal Dashboards' folder.
Create a dashboard component on the dashboard using the report you just created.
Set the header to 'Opptys by Type' and the title to 'For all time' for the dashboard component.
Use the horizontal bar chart dashboard component, and ensure the record count is displayed on the x-axis.
Follow the 'Opportunities Dashboard' dashboard in Chatter. Make sure that Feed Tracking is enabled for Dashboards first.
Post a snapshot of the 'Opptys by Type' dashboard component to Dashboard Chatter feed.

But I'm getting the following error when I check if the challenge has been completed
Challenge Not yet complete... here's what's wrong: 
The dashboard snapshot post to Chatter was not found.
Can someone hepl me?
If possible post the snapshots?