Aria2 could not connect to Aria2 RPC server

when i install aria2 and enter the secret token (optional) as dietpi i can’t to anything because of this error

Oh Snap! Could not connect to the aria2 RPC server. Will retry in 10 secs. You might want to check the connection settings by going to Settings > Connection Settings

in Connection Settings//Enter the RPC path: it says /jsonrpc

i dont see in my root folder jsonrpc file or folder