As Many people asked on this community wall about the Brother dcp-l2540dw wifi setup, So when i saw that thread i searched about that error on google so i found many solutions but the most convencing was of BrotherPrinterSupport247 Team they have provided the complete solution about the
Connect Brother mfc-l2710dw Printer to wifi. I Hope you will Get rid out of that Error. If you not found this site enough to solve that error you may reply me. so then i will try to do more research on that error and give you the best sollution but till then you can atleast try the solution mentioned above.