Unable to load saved filters to other Log files

[virendobariya]

Prerequisites

affected version: 3.12.4

make sure to check this before filing an issue:

• I am running the latest version
• I checked to make sure that this issue has not already been filed

Describe the issue

What did not work as expected?
I am unable to load the saved filters.

Steps to Reproduce

1. Load any loads into Chipmunk
2. Create some filters into it and save them.
3. After that right click over the saved filters and 'Export All to File'
4. Now open any other log file and try to open the saved filter file.
   
   The following error appears when the filters are saved as .txt file .
   
   The above shown error appears once the filter are saved as default format.

Environment
3.12.4