# Unhandled exception error during import of mission to B2

New line character in “Sensor settings” -> “Configuration” -> “Description” field generates unhandled exception error. The unhandled exception is generated in Logger Card Client during “Store mission” procedure:

<p align="center"><img src="https://content.gitbook.com/content/gejpyNLdjbUCpCURIFfT/blobs/MMcYxPkFrIrxh9yzUleP/Unknown%20image" alt=""></p>

The issue is caused by B2 application configuration if more than single line description is entered in “Sensor settings” -> “Configuration” -> “Description” field. If a line feed character (Enter) is used there as shown below, then the problem will occur.

![](https://content.gitbook.com/content/gejpyNLdjbUCpCURIFfT/blobs/gG445ju6HrRHQZqV5gxj/Unknown%20image)

The way to solve the problem is to not use line feed characters in the “Description” field.&#x20;

This issue will be fixed in the next release of application.