HI everyone, hope you are all well, I need help for SQL server xp_cmdshell

i am trying to add the SQL job to delete all the files inside folder but when I am running the query i am getting this message, does anybody can help me for this issue to fix, please.

this is my sql query :

EXEC master.dbo.xp_cmdshell 'for /d %x in (C:\{cdr@acc}\{acc@sap}\{sap@ppp}\tmpbox\*) do @rd /s /q %x' EXEC master.dbo.xp_cmdshell 'del C:\{cdr@acc}\{acc@sap}\{sap@ppp}\tmpbox\ /Q'

and this what I am getting in output, which does not delete any files inside the folder

output C:\{cdr@acc}\{acc@sap}\{sap@ppp}\tmpbox\709_TimeSheet_Brandon T Brooks_Shahram_Mehri_Kalantari_01_17_2019_09_00_51.pdf Access is denied. C:\{cdr@acc}\{acc@sap}\{sap@ppp}\tmpbox\709_TimeSheet_Daniella Woolfolk_Shahram_Mehri_Kalantari_01_17_2019_10_18_50.pdf Access is denied. NULL

Best Regards