Chart cannot save an item after 10 attempts. - Web.config

Because temporary folder is full

 Change in web.config

from 

<appSettings>

<add key="ChartImageHandler" value="storage=file;timeout=20;"/>

</appSettings>

to 

<appSettings>

<add key="ChartImageHandler" value="storage=file;timeout=20;dir=D:\PMSDev\PMS - Copy\chart\"/>

</appSettings>