@wpmudev-support2
@wpmudevsupport13
I will report that the problem has been resolved.
It was a server setting.
WAF (Web Application Firewall)
I was able to save with disabled.
There is no doubt that a save error occurred when WAF was enabled.
Thanks for your kind support.
thank you.
kenta
@wpmudevsupport13
sorry for the late reply.
Disable all plugins.
But I can’t press the update button.
I also disabled the theme.
But I can’t press the button.
Is there any other way?
Thank you`