simple pyrad auth always give out "Message: Invalid response authenticator (check shared secrets)" from the clients

[beavermml]

i am building a simple Radius server using pyrad

using the example given, i cannot make very simple auth server

the code seems okay with displaying all the attributes etc but the client always "Invalid Response Authenticator ( shared secrets is incorrect.)

im using radtest and radlogin to test

im using very simple "secretkey" as the keys.

i can confirm the keys are the same on both client and server since i can decrypt password ( if wrong, i cannot decrupt password )

[beavermml]

to test, my code always return Access-Accept

but clients will reject because of invalid Response Authenticator!