I want to create an API equal to WEB PERFORMER to call an available API

API I want to call: http://localhost:8080/WP_task/services/WP_task/IO_EMPLOYEES_execSHOW_A?format=json

I tried creating an IO call to BP and calling the function returns a list of data contained in the available API

http://localhost:8080/WP_task/services/WP_task/IO_EMPLOYEES_execSHOW_A?format=json This is the API I created but it doesn't work. run by postman and it reports an error: {      "Fault": {          "Code": "",          "Reason": "com.ctc.wstx.exc.WstxEOFException: Unexpected EOF in prolog r at at [row, col {unknown-source}]: [1,0]",          "Detail": ""      } }