It's still available at fruit-emu
https://www.fruit-emu.com/forums/files/file/3048-bwb-happy-go-lucky-wdx/
If not it'll be in the Legacy layout section, which is for donators only.
On mobile so can't see if you are a donator.
Alternatively the layout author could send you it.
@Mouldmanif it's JPEMU layouts you need converting you need FMEConvert. It's not posted to DIF so you'll have to go somewhere else to get it. This will not work for all JPEMU layouts, though.