New installation of EmonCMS - no inputs from EmonTX on EmonPi

Yes there is. Your Mk1 eye missed it. My Mk2 (the difference - it knows what to look for) spotted this.

That tells me that the entry in emonhub.conf doesn’t match the data coming from Node 15, which is an emonTx (unless you changed it). Luckily, I remembered you changed the sketch in your emonTx Missing temperature feeds on emonTX and emonCMS setup - #14 by Robert.Wall

What’s happened is your custom emonhub.conf has been overwritten by the standard one, and the change you did has been lost. Reapply that change, and it should work.