Issue with igraph_to_networkD3 function

HI...
I am trying to convert an igraph object to networkD3 object but getting the following error:

**Error in sort.list(bx[m$xi]) : 'x' must be atomic for 'sort.list'
Have you called 'sort' on a list?
In addition: Warning messages:
1: In data.row.names(row.names, rowsi, i) :
some row.names duplicated: 30,42,44,53,54,60,63,66,68,71,74,75,82,86,88,90,104,109,119,120,124,132,138,140,145,148,155,159,163,173,174,177,178,186,194,200,205,214,233,234,243,244,245,255,256,265,273,279,280,287,288,292,308,313,337,344,349,352,358,381,385,399,426,430,437,460,461,462,463,472,482,483,484,487,495,530,556,557,559,563,571,572,574,583,584,689,723,808 --> row.names NOT used
2: In data.row.names(row.names, rowsi, i) :
some row.names duplicated: 30,42,44,53,54,60,63,66,68,71,74,75,82,86,88,90,104,109,119,120,124,132,138,140,145,148,155,159,163,173,174,177,178,186,194,200,205,214,233,234,243,244,245,255,256,265,273,279,280,287,288,292,308,313,337,344,349,352,358,381,385,399,426,430,437,460,461,462,463,472,482,483,484,487,495,530,556,557,559,563,571,572,574,583,584,689,723,808 --> row.names NOT used**