I need help with darkrp

I recommend you either remove every DarkRP addon to see if an addon is causing it (including plugins). If that is, any the addons in batches of three or five and find the addon that is broken and replace/remove it.

If that is not the problem, then try to freshly reinstall the server and start again as it does not take long, OR check and validate your files using SteamCMD if you are localhosting.