cant bake objects! Unity 2019.2.12f1 (64-bit)

all i do is :
creating a light source, creating an object, set the object to static, un mark the outogenerate light,
then i press generate the light, after it is show some file but when i delete the light source it turns all dark.

i learning from udemy, his version is diffrent then the Unity 2019.2.12f1 but sill no thing is working as it should be.
please any help?
cant be a bug couse its the same way on the older version

also when it do looks like working, it says this : ‘ARGB 16 bit’ for platform ‘DefaultTexturePlatform’ is not valid with the current texture type ‘Default’.

Why are you deleting the light source?