fix(mousemove hook error): fix

src/controllers/handler.js

@@ -1535,6 +1535,7 @@ export default function luckysheetHandler() {
     
                 let luckysheetTableContent = $("#luckysheetTableContent").get(0).getContext("2d");
 
+                if(Store.flowdata && Store.flowdata[row_index]){
                     method.createHookFunction("sheetMousemove", Store.flowdata[row_index][col_index], {
                         r:row_index,
                         c:col_index,
@@ -1543,6 +1544,7 @@ export default function luckysheetHandler() {
                         "end_r": row, 
                         "end_c": col 
                     }, sheetFile,moveState,luckysheetTableContent);
+                }
             // }
         }