Traceback (most recent call last):
  File "/var/www/tennisabstract/cgi-bin/tourney.cgi", line 542, in <module>
    pdict = {k[0]: {'ioc': k[6], 'name': k[16] + ' ' + k[17], 'last': k[17]} for k in prows if k[0] in tplayers} 
                                         ~~~~~~^~~~~
TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'