Hello,
It seems like all the signs are broken like, heal, disposal, repair, sell, buy, etc.

this here : #2567

Likely duplicate of #2514. As you didn't fill out the template, we don't have sufficient information to help you.

This is likely due to the fact that you're not using the experimental builds on a 1.14 server. Download the experimental builds from the build server.

If that doesn't fix the issue, then feel free to open another ticket and completely fill out the issue template.