Getting error in browser

[marisusis]

astar.js:163 Uncaught TypeError: Cannot read property 'length' of undefined
at new Graph (astar.js:163)
at :7:13

[dzole0311]

astar.js:163 Uncaught TypeError: Cannot read property 'length' of undefined
at new Graph (astar.js:163)
at :7:13

Can you give more details about how to reproduce this issue?

[seamuskills]

I think i have the same problem.
basically I reference p[0] where p is the result of astar.search(pfGrid,start,end)
referencing p[0].x gives the error.