Failed to load resource error in echarts

Question

Hi friends,

 

In my Dashboard, I am showing a different type of charts using echarts. Before it was worked perfectly but some times graphs are empty not showing any content.Application hosted in aws server. I checked in the database the data is coming in the query execution.

 

It is showing the following error (I attached screenshot for this) 

 

Failed to load resource: the server responded with a status of 500 (Internal Server Error)  

 

Some times showing graphs and sometimes showing empty.

 

The graphs also loading slowly compared to before. It is a server issue or anything else?

 

I am facing problem with this, please can anyone help me to fix this issue.