Graphql POST not working, GET works

[JoeyP91]

Describe the problem/error/question

When I make a Graphql/HTTP POST request to the graphql endpoint for ShipHero, the API always returns a 500 error. The same method/body works in Postman with no issues.

I also pointed both requests to a requestbin, and couldn’t see any tangible difference

What is the error message (if any)?

500 error from the endpoint

Please share your workflow

Share the output returned by the last node

[
{
"message": 
"Unexpected error. Please contact a system administrator."
}
]

Information on your n8n setup

• n8n version: 1.17.1
• Database (default: SQLite): SQLite
• n8n EXECUTIONS_PROCESS setting (default: own, main): own, main
• Running n8n via (Docker, npm, n8n cloud, desktop app): Docker
• Operating system: Ubuntu

[n8n]

It looks like your topic is missing some important information. Could you provide the following if applicable.

• n8n version:
• Database (default: SQLite):
• n8n EXECUTIONS_PROCESS setting (default: own, main):
• Running n8n via (Docker, npm, n8n cloud, desktop app):
• Operating system:

[Jon]

Hey @JoeyP91,

Welcome to the community

Does Shiphero provide any kind of logging that may help? Are you also doing the same auth request in Postman?

[JoeyP91]

Hi @Jon

I am not sure RE shiphero logging - I could not find anything unfortunately.

Regarding auth, I actually use the token generated in the first step of my n8n workflow in Postman as well. So both requests use the same token.

[Jon]

Hey @JoeyP91,

Sadly that is all I have at the moment without seeing something that shows the post data from both attempts. It looks like something is returning the “please contact a system administrator” message so it would be handy to see where that is coming from.

[JoeyP91]

Hi Jon,

I’ve managed to get it working by setting the Request Format to JSON on the GraphQL node. Thanks for your assistance and hope this helps someone else in the future.