line chart populating the data but not showing vertical axis numbers

[Rajat Jain]

1. for the below data line chart is getting populated but vertical axis is not showing up this data i am feeding to, also I am getting no error in console.
   var data = google.visualization.arrayToDataTable(processedData);
   var chart = new google.visualization.LineChart(document.getElementById('prediction_chart'));

   
   

   chart.draw(data, options);
   my config is
   var options = {

   title: 'xyz',

   curveType: 'function',

   legend: { position: 'bottom' },

   pointSize: 5,

   series: {

   2: { lineDashStyle: [4, 2] },

   3: { lineDashStyle: [4, 2] },

   },

   vAxis: {

   scaleType: 'log'

   }

   };
2. 
   
3. data:
4. (13) [Array(5), Array(5), Array(5), Array(5), Array(5), Array(5), Array(5), Array(5), Array(5), Array(5), Array(5), Array(5), Array(5)]
1. 0:(5) ["month", "Actual", "Predicted", "LowerBound", "UpperBound"]
2. 1:(5) ["January", 1388, 1807, 1872, 1741]
3. 2:(5) ["February", 1476, 1774, 1888, 1659]
4. 3:(5) ["March", 1476, 1790, 1946, 1634]
5. 4:(5) ["April", 1476, 1826, 2006, 1647]
6. 5:(5) ["May", 1411, 1843, 2035, 1652]
7. 6:(5) ["June", 0, 1828, 2028, 1628]
8. 7:(5) ["July", 0, 1808, 2020, 1596]
9. 8:(5) ["August", 0, 1809, 2037, 1582]
10. 9:(5) ["September", 0, 1824, 2065, 1582]
11. 10:(5) ["October", 0, 1827, 2079, 1575]
12. 11:(5) ["November", 0, 1817, 2078, 1555]
13. 12:(5) ["December", 0, 1811, 2083, 1539]