Hello,
API documentation says that there is not "getCellAddressString" method exposed by the topLeftCornerCell. You should instead pass a cell object to it as follows:
imageShape.topLeftCornerCell(sheet.getCell('C9'));
Please let me know if this solves the situation.
Thanks for the reply, but it does not solve the problem. It shows the below error
Cannot call method 'getHashCode' of null
Please help asap
Thanks,