When creating a new integration with PostgreSQL. At the "Connect integration" step. An error message is displayed:

An error occurred while performing your request on the Platform Server API: Server was unable to process request. ---> One or more errors occurred. ---> IDX20803: Unable to obtain configuration from: '[PII is hidden]'. ---> Unexpected character encountered while parsing value: <. Path '', line 0, position 0. (OS-INBL-API-00003)