Hello and good day.
It seems with many of the tests I run I see a request with a 404 error at the bottom of the waterfall. The error request is: asset-manifest.json
Here is one test for google: https://www.webpagetest.org/result/200617_41_ff8904297c8a952159f604ba36bfe5c4/
Please let me know what you think.
Thank you and have an amazing day.