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Plz follow the Origenal thread on XDA
https://forum.xda-developers.com/moto-e-2015/development/xosp-moto-e-2015-otus-t3633080
Additional Information:
First time installing XOSP on your Moto E 2015 OTUS, or coming from another ROM?
-Make sure your Bootloader is unlocked and you're
-running the latest TWRP
-Download latest build,XOSPApps and GApps
-Reboot recovery
-Wipe data factory reset
-Flash latest XOSP
-Flash GApps
-Flash XOSPApps (Optional)
-Reboot
XOSP Apps
https://downloads.xosp.org/dlfile.php?s=a&v=dl&xa_o_v=N&x_p_n=XOSPApps-Standard-22-04-2017.zip