Unable to open a new ssh connection after running script

[Xopher00]

I have been trying to set-up a wireless access-point on my new Raspberry Pi Zero. I stumbled up this script after reading this guide https://blog.thewalr.us/2017/09/26/raspberry-pi-zero-w-simultaneous-ap-and-managed-mode-wifi/ and decided it would be faster to configure my Pi using it. However after running the script and rebooting my Pi, I noticed that while my access point was up and running, I was no longer able to open an SSH connection into the Pi. This has made it impossible to perform further configurations I had been planning to do, so I had to re-flash the micro-sd and start again. Is there a setting I need to change somewhere before running this script to prevent this from happening?

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