mplleaflet AttributeError: 'XAxis' object has no attribute '_gridOnMajor'

[22tommibaer01]

mplleaflet attribute error with first use

Problem

• download mplleaflet v. 0.0.5 from conda-forge
• started a test script like

  
  import matplotlib.pyplot as plt
  import mplleaflet

long=[72.12,72.012,72.25,72.0254,73] #data (random) lat=[50,50.21,51.1263,52.4174,53.21]

ax=plt.plot(long, lat) #matplotlib

mplleaflet.display() #mplleaflet

- not working; Error:

file "C:\Anaconda\lib\site-packages\mplleaflet\mplexporter\utils.py", line 241, in get_grid_style if axis._gridOnMajor and len(gridlines) > 0:

AttributeError: 'XAxis' object has no attribute '_gridOnMajor'

### Solution
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- not a big deal, just one line of code
- solution by [this](https://github.com/plotly/plotly.py/issues/2913)

### Possible Solution
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- go to line and file from the error message `(def get_grid_style)`
- change `axis._gridOnMajor` to `axis._major_tick_kw['gridOn']`
- finish 

### Setup
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 - conda 4.10.3
 - python 3.8.8
 - matplotlib 3.4.2
 - mplleaflet 0.0.5