Error: Method not found

[k7n2g]

Hello can anyone help with this : Error solving and point me in the right direction please any help appreciated

{ Error: Method not found
at /root/explorer/node_modules/bitcoin/lib/jsonrpc.js:99:19
at Array.forEach ()
at IncomingMessage. (/root/explorer/node_modules/bitcoin/lib/jsonrpc.js:96:15)
at IncomingMessage.emit (events.js:187:15)
at endReadableNT (_stream_readable.js:1092:12)
at process._tickCallback (internal/process/next_tick.js:63:19) code: -32601 }
GET /api/masternode?command=count 200 4.818 ms - 39
{ Error: Method not found
at /root/explorer/node_modules/bitcoin/lib/jsonrpc.js:99:19
at Array.forEach ()
at IncomingMessage. (/root/explorer/node_modules/bitcoin/lib/jsonrpc.js:96:15)
at IncomingMessage.emit (events.js:187:15)

[dysoncoin]

have you already been able to solve the problem?
I have the same problem