Error: TCL READ VARNAME

can't read "memberid": no such variable (code TCL READ VARNAME)

-code: 1

-level: 0

-errorstack: INNER loadScalar1 CALL {::rwpage::profile3 prepare_page fr {language fr member sanaz_alavizadeh}} CALL {my prepare fr {language fr member sanaz_alavizadeh}}

-errorcode: TCL READ VARNAME

-errorinfo: can't read "memberid": no such variable
    while executing
"return -code error -errorcode invalid_member_key "Invalid member key $memberid""
    (object "::rwpage::profile3" method "::rwpage::Profile::prepare_page" body line 36)
    invoked from within
"$this prepare_page $language $argsqs"

-errorline: 15