After installing wordpress and some plugins i am getting this error when i create a sitemap. I realy have no idea what this is and how to solve. Any help would realy be appreciated!

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> 
> ```
> Warning: file_put_contents(/home/ugywhzos/domains/mydomain.com/public_html/sitemap.xml) [function.file-put-contents]: failed to open stream: Permission denied in /home/ugywhzos/domains/ipadkopen.biz/public_html/wp-content/plugins/simple-google-sitemap/simple-google-sitemap.php on line 283
> 
> ```
> 
> 

And this error after editing a post:

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> 
> ```
> Warning: file_put_contents(/home/ugywhzos/domains/mydomain.com/public_html/sitemap.xml) [function.file-put-contents]: 
> failed to open stream: Permission denied in 
> /home/ugywhzos/domains/mydomain.com/public_html/wp-content/plugins/simple-google-sitemap/simple-google-sitemap.php 
> on line 283
> 
> Warning: Cannot modify header information - headers already sent by 
> (output started at /home/ugywhzos/domains/mydomain/public_html/wp-content/plugins/simple-google-sitemap/simple-google-sitemap.php:283) 
> in /home/ugywhzos/domains/mydomain.com/public_html/wp-includes/pluggable.php on line 897
> 
> ```
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>