Resource pack

So, recently I added a resource pack to my 1.14.4 java Minecraft server, and seemed to work! It downloaded itself (actually downloaded) and then... nothing! Nor me nor my friend got it working. I looked in the console and found this:

[20:42:02 WARN]: You specified a resource pack without providing a sha1 hash. Pack will be updated on the client only if you change the name of the pack.

I already know what Sha1 is, but I unfortunately can’t edit the server.propeties... Is there anyway around this? Please help!

Here is the link I use: https://www.dropbox.com/s/gwu8lgpat74xcsc/relPack.zip?dl=1

Also it does download it (actually download) but it just doesn’t apply or show up in the resource pack option

I’m going to test if it works now, thanks!