SDK 3.1.3 crash on Fenix 6

Hello, 

I have updated my apps with the new SDK and for the Fenix 6 devices.

Everything works great on the simulator and on my Fenix 6 (build for device wizard).

But the uploaded version on the store crashes. 

How can I debug ? 

I only have : 

Error: Too Many Arguments Error
Details: 'Failed invoking <symbol>'
Time: 2019-09-10T09:10:52Z
Part-Number: 006-B3288-00
Firmware-Version: '3.00'
Language-Code: fre
ConnectIQ-Version: 3.1.3
Store-Id: 17fd9ff1-180d-4352-8257-714b1fae2a3b
Store-Version: 6
Filename: 99A91019
Appname: Scrollit
Stack:
- pc: 0x100036f5

Many thanks