g550t1 dump no space how to fix

Waiting For Android Device.....Done
Reading Device Info...
Device Model: SM-G550T1
Device Manufacturer: samsung
Device Firmware: G550T1UVS2APL1
Device Serial: RV8HA0YT3LA
Device Chipset: Exynos
Device IMEI: 353764082565494
Android Version: 6.0.1
Android SDK: 23
Firmware Country: USA
Firmware Code: TMK
Checking Root.....Done
Detecting Device's Partitions Info Table.....Done
Backing up [boot] [13 MB].....Done
Backing up [recovery] [15 MB].....Done
Backing up [param] [8 MB].....Done
Backing up [system] [2920 MB].....Failed: No Space Left On Device