graphql-iso-date | RFC 3339 compliant date/time GraphQL scalar types | Date Time Utils library

I can see, your date array is not a format date to iso. You have to format date before send it to graphql. So change the code--

It's strange but the problem was with this import { GraphQLDateTime } from 'graphql-iso-date'; package.

After removing it from the schema, it started working.

Your scalar type name in the schema is GraphQLDateTime but in the request you are using DateTime.
Try changing the request to:

The issue seems to be resolved when --transpile-only flag is added to the nexus:reflect command.

This means the reflection command gets updated to:

That error only occurs when there are multiple copies of graphql-js in your dependencies. Most commonly it's because there are multiple versions in your node_modules. You can verify that's the case by running npm ls graphql or yarn ls graphql -- if you see multiple versions listed in your dependencies, that's a problem. Typically, this only happens when you have dependencies that directly depend on graphql-js (instead of making it a peer dependency). If you use yarn, you can use it's selective dependency feature to get around that issue.

When you're doing local development of multiple packages, you can also run into this issue because you have two different copies of graphql-js -- one in each of your two projects. That happens because npm link or yarn add link only creates a symlink from one of your project's node_modules to the other project. As a workaround, you can link graphql-js as well. Go into node_modules/graphql inside project A and run npm link/yarn link. Then go into the root directory for project B and run npm link graphql/yarn link graphql. Now project B will use project A's copy of the library instead of its own.

There is a known issue in the pg module and NodeJS 14. Since pg-promise also uses this module - I suspect this is the problem.

The proposed solution is to make sure you have pg>=8.0.3 installed.

This can be done by

• updating to pg-promise>=10.5.2 which already has the updated pg module as a dependency and/or
• updating to pg>=8.0.3 in the dependencies if explicitly specified.

Also make sure that any other library depending on pg is up to date.