That is just the name of the log file. You should either use the upload button to send it to this forum. Or, copy/paste the contents into a post.
I see you have improved your DNS. But, there are still errors. See pic below from dnsviz test. It is possible these DNS problems are your only problem. Or, you might have other problems too. In any case you should correct the DNS.
LightSail DNS was slightly different than Route53. I am not sure if it still is. If it is the same as Route53 then you need to make sure the 4 nameservers listed under "Hosted zone details" in the Route 53 console are the same ones listed at both your registrar, and in the NS record for your zone. (Refer to "Step 4" of the documentation for using Route 53 as your DNS .)