fails on POST with 400

[yankeeinlondon]

I configured the gridsome.config.js file to point to my site and playing around with the GraphQL explore URL it would appear it has connected correctly but when I run "develop" webpage I get a blank screen with two errors:

1. The first is a POST request
   

2. Then a Vue warning: "Cannot read property 'allWordPressPost' of undefined""
   

3. Finally, there is another run-time error which seems like a restatement of the second:
   

Since the error stems from the allWordPressPost query I thought I'd try a sample query from the explorer to see if it worked. Now I must admit I know very little about GraphQL but here are the query results:

Note: this blog has 1000's of posts from as early as 2001

[yankeeinlondon]

Just noticed another message that might be helpful in debugging. When starting with yarn develop I see the following:

immediately afterward this completes and these errors are swallowed and replaced with:

[yankeeinlondon]

I have also gone to https://my.blog.com/wp-json and validated that the API is enabled for sure. Also of note ... I am using 4.9.8 of Wordpress.

[yankeeinlondon]

I have also run the build scripts ECONNRESET error's URL in the browser and it returns fine:

I thought maybe the quantity of "perPage" was too high so I changed to 25 but Gridsome still gets a ECONNRESET error.