can someone tell me why i receiving a general error when i try to obtain the sites?

PS C:\Users\efrai> Invoke-RestMethod -Uri "${OMADA_URL}/${CONTROLLER_ID}/api/v2/sites" -Method Get -Headers $RequestHeaders -WebSession $OmadaSession

errorCode msg
--------- ---
       -1 General error.

I am able to call other endpoints successfully but i can't get sites.

PS C:\Users\efrai> Invoke-RestMethod -Uri "${OMADA_URL}/${CONTROLLER_ID}/api/v2/loginStatus" -Method Get -Headers $RequestHeaders -WebSession $OmadaSession

errorCode msg      result
--------- ---      ------
        0 Success. @{login=True}

Thanks a lot in advance.