If use 'splitKeysBy' option, error occurred.

[GHLab]

Hi. Thank you for this project.
Anyway, I'm using this library but if I use 'splitKeysBy' option, error is being occurred.

[INFO] Running "propertiesToJSON:main" (propertiesToJSON) task
[INFO] Warning: Cannot assign to read only property 'location' of Search conditions� Use --force to continue.

I added just splitKeysBy: '.' and I don't know what property has problem.
Please check this.
Thank you.

[jcbvm]

Do you have any example properties data where this error occurs?