i see, can you give me a general tip for what type of firewall? Ill reach out to the hostThis comes down to some aggressive firewall usually. If you edit the typography on the default style I believe it'll throw the same error. You need to reach out to your host for help.
It's not a style related issue and you will run into other problems if it's not fixed.
contacted the host they disabled "ModSecurity" for me and everything seems to work fine now. Although they warned its risky to due so...If you view your console when the error shows, it should give you more details on what to tell your host. Last few times it was due to "ModSecurity".