Android pie update error

[DrSaddam]

I am using galaxy s8plus. It is showing that android pie update is available. Bt when i am going to update through wifi its showing error.  Bt with network data,  it updates. Is anyone facing this problem? 

[Rohitttttt]

restart ur phone and check

[DrSaddam]

not working...

[Abrez]

factory reset your phone before proceeding to update