internal 500 error in using API V4

Hi, i have been trying to run this API request and always get:

{"errorCode":"IC-999-99","errorMessage":"Internal Error"}

Here's what I am sending:

curl --location --request GET https://api.equinix.com/ecx/v3/l2/common/metros -H "Content-Type: application/json" -H "Authorization: Bearer --------k2wFtBdLcAb8kTdCOfHM"

Could anyone assist or tell me what i'm doing wrong?