Cant change sidebar widget

Hello,
I can’t change the configuration of the sidebar widget in the Woodman theme. I have attached an image for this error. I use Nginx with WordPress, and if I press the save button, it shows a 405 error. Please help me.

Thanks.

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Hello,

Try to install the Classic Widgets plugin to fix this problem
https://wordpress.org/plugins/classic-widgets/

Best Regards

[Author]

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