Freeradius authenticate windows ad username and password failed while testing thru wifi setup

Trying to authenticate windows AD username and password by freeradius thru NTLM auth.

while testing ntlm auth in freeradius machine, got success message.

ntlm_auth --request-nt-key --domain=MPLradius --username=Administrator -- 
 password=abc@123456789
 NT_STATUS_OK: Success (0x0)


 While trying thru wifi , got below error

 [chap] login attempt by "sophosadmin@mplradius.local" with CHAP password
 [chap] Cleartext-Password is required for authentication
    ++[chap] = invalid
    +} # group CHAP = invalid
    Failed to authenticate the user.
    expand: BLACK -> BLACK
    Login incorrect (rlm_chap: Clear text password not available): 
    [sophosadmin@mplradius.local/<CHAP-Password>] (from client x.x.x.x port 2149580837 
    cli xx:xx:xx:xx:xx:xx) BLACK
    Using Post-Auth-Type Reject

Could you help me sort out this error.