Unable to copy pages to a new space in Confluence

[idc.confluence]

Whenever I try to copy pages with child to a new space. I am getting the attached error 

[KAGITHALA BABU ANVESH]

Hello @idc.confluence,

1. I think there some pages with the same name in the destination Space.

2. check you have add page permission in-destination space.

Thanks.

Anvesh