Access to the specified resource has been forbidden

Hello,

When attempting to use the REST API and make any calls to the community API , I am getting the following error.

"Access to the specified resource has been forbidden"

I have admin access to the community and have granted my user REST API access.

I am doing a POST to the following endpoint:

curl -XPOST 'http://<community url>/restapi/vc/authentication/sessions/login?user.login=<user login>&user.password=<user password>'

Any assistance will be much appreciated.