Failed in capturing the artifacts! Please help

Hi, I have followed the steps given bellow link to capture the artifacts. 

https://docs.ycrash.io/ycrash-features/ycrash-faq/only-capture-artifacts.html#download-ycrash-agent

However, it failed to capture and print the following error. 

C:\Personal\Course\JVM\yc-latest\agent>yc -j C:\Program Files\Java\jdk1.8.0_144 -onlyCapture -p 10488 -hd
Thu Sep 30 16:27:19 IST 2021 INF '-s' yCrash server URL argument not passed.
Usage of yc:
  -a string
        The APP Name of the target
  -address string
        Address to serve API service (default "localhost")
  -c string
        The config file path to load
  -caCertPath string
        The CA Cert Path
  -captureCmd string
        Capture command line to be executed
  -cmd value
        The command to be executed, should be paired with '-urlParams' together
  -d    Delete logs folder created during analyse (default true)
  -gcCaptureCmd string
        GC log capture command line to be executed
  -gcCaptureMode
        Run in GC Capture mode
  -gcPath string
        The gc log file to be uploaded while it exists
  -hd
        Capture heap dump, default is false
  -hdCaptureCmd string
        Heap dump capture command line to be executed
  -hdCaptureMode
        Run in Heap Dump Capture mode
  -hdPath string
        The heap dump file to be uploaded while it exists
  -j string
        The java home path to be used. Default will try to use os env 'JAVA_HOME' if 'JAVA_HOME' is not empty, for example: /usr/lib/jvm/java-8-openjdk-amd64 (default "C:\\Program")
  -k string
        The API Key that will be used to make API requests, for example: tier1app@12312-12233-1442134-112
  -logFileMaxCount uint
        Max count of the log files (default 7)
  -logFileMaxSize int
        Max size of the log files (default 536870912)
  -logFilePath string
        Path to save the log file
  -logLevel string
        Log level: trace, debug, info, warn, error, fatal, panic, disable. (default "info")
  -m3
        Run in m3 mode, default is false
  -m3Frequency duration
        Frequency of m3 mode, default is 3 minutes (default 3m0s)
  -onlyCapture
        Only capture all the artifacts and generate a zip file, default is false
  -p string
        The process ID or unique token of the target, for example: 3121, or 'buggyApp'
  -pingHost string
        Ping to host three times (default "google.com")
  -port int
        Port to serve API service (default -1)
  -processTokens value
        Process Tokens of m3 mode
  -s string
        The server url that will be used to upload data, for example: https://ycrash.companyname.com
  -tags string
        Comma delimited strings as tags to transmit to server
  -tdCaptureCmd string
        Thread dump capture command line to be executed
  -tdCaptureMode
        Run in Thread Dump Capture mode
  -tdPath string
        The thread dump file to be uploaded while it exists
  -urlParams value
        The params to be added at the end of upload request url, should be paired with '-cmd' together
  -verifySSL string
        Verifying the server SSL certificate (default "true")
  -version
        Show the version of this program

C:\Personal\Course\JVM\yc-latest\agent>

Kindly requesting you to review and let me know if i am missing anything.

Thanks and Regards,

Sampath