anvil.server.NoServerFunctionError: No server function matching "forecast" has been registered

Anvil Q&A
1

I am quite new these technologies, I am just trying making a prediction on defined array to return the results on console at anvil. I have my trained and saved model at jupyter.

I have followed the tutorial for cat or dog ? My one is a time series issue, however it throws an error like
anvil.server.NoServerFunctionError: No server function matching “forecast” has been registered
I have added the code as below What could be the problem ?

import anvil.server

anvil.server.connect("<My uplink key>")

# Connecting to wss://anvil.works/uplink
# Anvil websocket open
# Connected to "Default environment (dev)" as SERVER

@anvil.server.callable
def forecast(data):
    publish_prediction = predict_model(saved_final_model, data=data_unseen)
    return publish_prediction
anvil.server.wait_forever()

import random
from plotly import graph_objects as go
from ._anvil_designer import Form1Template
from anvil import *
import anvil.server

class Form1(Form1Template):

  def __init__(self, **properties):
    # Set Form properties and Data Bindings.
    self.init_components(**properties)

    # Any code you write here will run when the form opens.

  def date_picker_1_change(self, **event_args):
    """This method is called when the selected date changes"""
    pass
  
  def button_1_click(self, **event_args):
    """This method is called when the button is clicked"""
   
    anvil.server.call(forecast)

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2

The forecast function takes a data parameter. You are not providing a data parameter when you make your call from the client.

4

Also based on the code in the post, the code for calling the forecast function should be in quotation marks

anvil.server.call('forecast')