Problem on Stored Procedure render SSRS reports by using Invoke-WebRequest -Uri cmd

I built a stored procedure to render a SSRS report and save it to a specified location by using a combination of SQL statement and batch cmd.
Below is the code:

CREATE PROCEDURE sp_renderSSRS_doc
    @pRsURL VARCHAR(1000),      -- Rerport URL
    @pDocno VARCHAR(100),       -- Doc no
    @pRsFormat VARCHAR(50),     -- Render report format
    @pRsExt VARCHAR(10),        -- Render report extention
    @pBatchFilePath VARCHAR(100),   -- Batch file include powershell command
    @pOutPutPath VARCHAR(500)   -- output location
AS
BEGIN

SET NOCOUNT ON;

DECLARE @pCommand VARCHAR(4000)
SET @pRsURL = @pRsURL  + ' ' + @pRsFormat + ' ' + @pDocno  
SET @pCommand = @pBatchfilePath + ' ' + @pRsURL + ' ' + @pOutputPath
EXEC xp_cmdshell @pCommand

END
GO

Batch File C:\Reports\RunSSRSDN.bat

@echo off
SETLOCAL ENABLEDELAYEDEXPANSION
:: --- Check for sufficient parameters ---
if "%~4"=="" (
    echo Insufficient parameters.
    echo Usage: %~nx0 ReportURL pDN OutputFile
    goto :EOF
)
:: --- Read passed parameters ---
set "ReportURL=%~1"
set "rsFormat=%~2"
set "pDN=%~3"
set "OutputFile=%~4"

:: --- Build the full URL step by step using CALL SET ---
set "FullURL=%ReportURL%"
call set "FullURL=%%FullURL%%&rs:Format=%rsFormat%"
call set "FullURL=%%FullURL%%&pDN=%pDN%"

:: --- Call PowerShell using default credentials ---
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -NoProfile -Command "Invoke-WebRequest -Uri \"!FullURL!\" -UseDefaultCredentials -OutFile \"!OutputFile!\""

ENDLOCAL

SQL Statement to execute

DECLARE @pRsURL VARCHAR(1000) = 'http://mySSRSServer/ReportServer?/Development/test_dynamic_report'
DECLARE @pDocno varchar(100) = 'DOC001'
DECLARE @pRsFormat VARCHAR(100) = 'PDF'
DECLARE @pRsExt VARCHAR(100) = 'pdf'
DECLARE @pBatchfilePath VARCHAR(100) = 'C:\Reports\RunSSRSDN.bat'
DECLARE @pOutputFolder VARCHAR(100) = 'C:\Reports\'
DECLARE @pOutputPath VARCHAR(100) = @pOutputFolder + @pDocno + '.' + LOWER(@pRsExt)

EXEC sp_renderSSRS_doc @pRsURL, @pDocno, @pRsFormat, @pRsExt, @pBatchfilePath, @pOutputPath

I want to move the batch file process into the stored procedure, because there is "&" inside the report URL. I tried to use the below hardcoded statement to try

DECLARE @pCommand VARCHAR(1000)
SET @pCommand = 'C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -NoProfile -Command "Invoke-WebRequest -Uri 
                \"http://MySSRSServer/ReportServer?/Development/test_dynamic_report&rs:Format=PDF&pDN=CN25030051\" -UseDefaultCredentials -OutFile \"C:\Reports\CN25030051.pdf\""'

EXEC xp_cmdshell @pCommand

and got below error

Msg 15121, Level 16, State 21, Procedure xp_cmdshell, Line 1 [Batch Start Line 8]
An error occurred during the execution of xp_cmdshell. A call to 'CreateProcess' failed with error code: '5'.```

I think this is related to the "&" is not allow use directly on PowerShell, but I have already use \"...\". Does anyone have idea on it?

I cannot run cmd with "&" by using xp_cmdshell.