Consume private packages from DevOps Artifacts in AzureML

I have published a private Python package to Azure DevOps Artifact.
When trying to follow this tutorial I encounter following problem, to which there is no help online whatsoever.

{
"code": "AciDeploymentFailed",
"statusCode": 400,
"message": "Failed to submit build for Environment with Name: deploymentenv Version: Autosave_2020-08-26T19:42:40Z_b11e8d13 Reason: {\n \"error\": {\n \"code\": \"UserError\",\n \"severity\": null,\n \"message\": \"Unable to set authorization on python feed. Multiple connections available for the specified host company.pkgs.visualstudio.com\",\n \"messageFormat\": null,\n \"messageParameters\": null,\n \"referenceCode\": null,\n \"detailsUri\": null,\n \"target\": null,\n \"details\": [],\n \"innerError\": null,\n \"debugInfo\": null\n },\n \"correlation\": {\n \"operation\": \"fcd33b3aaf97a04982c36841fd2176d5\",\n \"request\": \"4ddc0bff3cd6ec47\"\n },\n \"environment\": \"westeurope\",\n \"location\": \"westeurope\",\n \"time\": \"2020-08-26T20:15:48.9795242+00:00\",\n \"componentName\": \"environment-management\"\n}.",
"details": []
}
I replaced the actual company name with "company".

What does the error Unable to set authorization on python feed. Multiple connections available for the specified host mean?