Pass 'FORWARD' has no vertex shader

Hello,

A while back I asked a question about legacy vertex lit pass (which I have then learned was not supported) and was advised to use a modern rendering path, such as Forward.

Now, when deploying material to a device, I'm getting this error :

08-04 09:25:44.614: D/Unity(12266): WARNING: Shader
08-04 09:25:44.614: D/Unity(12266): Unsupported: 'Shader Forge/sh_water_01' - Pass 'FORWARD' has no vertex shader

Is there something you can advise?

Thanks!

Wojtek