Not sure what to do

[Dman (Dennis Hartshaw)]

What would be the cause of this wilting and blackening of these tops I have 9 plants in a greenhouse and this is the only one having this issue please help me

[kmac03]

Hi @Dman!

You can find your responses over here:

Don't know what's going on

Can someone explain why the tops of this plant is blackening and wilting it is an auto flower growing in a greenhouse have 9 plants total and this is the only one that has the issue 1st Pic is healthy plant right across from it [IMG_20210708_081414891] [IMG_20210708_081343635] [IMG_20210708_081327945] [IMG_20210708_081259858]

I think this is a repeat, right?