code: def render_emtpy_figure():
      return {
          "layout": {
              "xaxis": {"visible": False},
              "yaxis": {"visible": False},
              "annotations": [
                  {
                      "text": "No matching data found",
                      "xref": "paper",
                      "yref": "paper",
                      "showarrow": False,
                      "font": {"size": 28},
                  }
              ],
          }
      }
  
imports: import pathlib
  import dash
  import dash_core_components
  import dash_html_components
  import numpy
  import pandas
  import plotly.express
  import plotly.graph_objects
  from dash.dependencies import Input, Output
  from load_data import get_aggregated_data, get_available_dates
  from plotly.subplots import make_subplots
label_desc: Use image node_id 6 for calling a global function with example usage: render_emtpy_figure() and returns: dict