Too many symbol files

Hi,
I am using Pie Chart in my app. I was able to build and successfully test the app. My app is using both swift and objective C. Pie Chart is called from a swift module.
XCODE version 10.1.
Deployment Target - 11.0

After submitting my app to App Store, i get an email with below message:

Too many symbol files - These symbols have no corresponding slice in any binary [XXXX-YYYY-ZZZZ-AAAA-BBBBBBBB.symbols].

when i do a 'dwarfdump --uuid *' , i see this is from the charts library (below). Can anyone of you let me know why this error is caused and what needs to be done to fix this.

UUID: XXXX-YYYY-ZZZZ-AAAA-BBBBBBBB (armv7) Charts.framework.dSYM/Contents/Resources/DWARF/Charts

Start with the reported Xcode 10.1 archive and run `dwarfdump --uuid *`, comparing the armv7 UUID in Charts.framework.dSYM with the submitted app’s binary slices. Inspect how the Charts framework is packaged and whether its dSYM is included separately. Done means identifying the source of the unmatched symbol file and documenting a verified submission fix.

Written by the indexing model from the issue text.