Fix table chart rendering issue in Gutenberg block #1012

Author: girishpanchal30

classes/Visualizer/Gutenberg/Block.php

@@ -367,6 +367,10 @@ public function get_visualizer_data( $post ) {
 			$data['visualizer-data'] = $this->format_chart_data( $data['visualizer-data'], $data['visualizer-series'] );
 		}
 
+		if ( ! isset( $data['visualizer-settings']['hAxis']['format'] ) ) {
+			$data['visualizer-settings']['hAxis']['format'] = '';
+		}
+
 		$data['visualizer-data-exploded'] = '';
 		// handle annotations for google charts
 		if ( 'GoogleCharts' === $library ) {