The `%server:uptime%` placeholder always returns empty string.

[sakurawald]

Environment

java_version=25
minecraft_version=26.3
fabric_loader_version=0.19.5
sgui_version=2.2.0+26.3
placeholder_api_version=3.2.0+26.3
luckperms_api_version=5.5
common_economy_api_version=2.0.0

Steps to reproduce

Parse the %server:uptime% placeholder, and gets the empty string as the result.

However, the %server:time% placeholder does work.
Also, other server related placeholders like %server:name%, %server:tps% and %server:online% work normally.

[arnokeesman]

Same happens with %player:playtime%, it happens because it determines how to parse (with/without formatter) by checking if arg != null, but arg is never null, it's an empty string when there is no format provided.
I don't know what the intended behaviour is and where this should be fixed, but hope this helps