Report problem 7.2

When creating report you can not add chart. You can add chart only after saving report and editing same report

I cannot add a chart at all. Clicking on the “Add Chart” button results in “Cannot read property ‘length’ of undefined”

sugar_grp1_jquery.js:1 
Uncaught TypeError: Cannot read property 'length' of undefined  sugar_grp1_jquery.js?v=-jyXm4Bw5WUjjSxtcaBPGA:1 
Uncaught TypeError: Cannot read property 'length' of undefined  sugar_grp1_jquery.js?v=-jyXm4Bw5WUjjSxtcaBPGA:1
n.extend.each  chart Lines.js:3 
loadChartLine  index.php:1020
(anonymous function)  sugar_grp1_jquery.js?v=-jyXm4Bw5WUjjSxtcaBPGA:1 
n.event.dispatch  sugar_grp1_jquery.js?v=-jyXm4Bw5WUjjSxtcaBPGA:1 
r.handle