Error msg: drupal phpfreechat module on drupal 4.74

* warning: mkdir(/nicknames): Permission denied in /home/content/site.name/html/modules/phpfreechat/phpfreechat/src/pfctools.php on line 122.

* warning: opendir(/nicknames): failed to open dir: No such file or directory in /home/content/site.name/html/modules/phpfreechat/phpfreechat/src/containers/file.class.php on line 388.

* warning: readdir(): supplied argument is not a valid Directory resource in /home/content/site.name/html/modules/phpfreechat/phpfreechat/src/containers/file.class.php on line 389.

The problem seem come from the configuration of phpreechat on dupal 4.7.4

Reson that could make this error appear:

1. May be change the site theme (drupal theme)

MY Solution at the current time:

1. check all folder permission for phpfreechat usually all folder and files at /files/phpfreechat directory

2. Log in as site administer then Go to : administer -> settings -> phpfreechat

2.1 on the page configuration click on Reset To Default button = to reset phpfreechat configuration.

then

2.2 on the same page click the Save Configuration button.