No hashes found when cracking hccapx file

I'm receiving this error of no hashes loaded when trying to crack a hccapx file. I've looked around but haven't found much to resolve this issue. 


~$ hashcat -m 2500 capture.hccapx rockyou.txt
hashcat (v4.2.1) starting...

OpenCL Platform #1: Apple
=========================
* Device #1: Intel(R) Core(TM) i5-6360U CPU @ 2.00GHz, skipped.
* Device #2: Intel(R) Iris(TM) Graphics 540, 384/1536 MB allocatable, 48MCU

No hashes loaded.

Started: Thu Apr 11 22:27:39 2019
Stopped: Thu Apr 11 22:27:39 2019