Error:Java.lang.string cannot be cast to java.land.Number

Dear all,
Requested your valuable suggestions to understand the error and troubleshoot the below in SNAP 8.0 graphic builder module.
Error:Java.lang.string cannot be cast to java.land.Number

To be able to help you wenn need some more information.
Please take a look at the first section of the FAQ
In your case it is necessary to know which operators you use and how you have configured them.

Sure thank you very much. First I will go through the FAQ