Sorry for the late reply.
I solved this based on this thread:
The problem was that Rtools had installed both 32-bit and 64-bit versions by default. I reinstalled it just using 64-bit version and it worked!
Sorry for the late reply.
I solved this based on this thread:
The problem was that Rtools had installed both 32-bit and 64-bit versions by default. I reinstalled it just using 64-bit version and it worked!