You are using an old Header Bidding version.
Step 1: Follow the recommended fix in the debug test result
Step 2: Log into tools.monetizemore.com > PGHB > Configurations
Step 3: Open the relevant configuration
Step 4: Tick the “Beta” box and upgrade to the latest version, or uncheck “Beta” and the system will automatically run the latest stable version.
Step 5: Save and click publish
Step 6: Re-run PGAI after 10-15mins