Hello @shmanich
Thank you for contacting the support and sorry for any inconvenience that might have been caused due to that.
The issue seems to be coming from this plugin, not Rank Math:
https://ww.wp.xz.cn/plugins/advanced-nocaptcha-recaptcha/
Hope that helps.
I deactivated the “Advanced noCaptcha & invisible Captcha” plugin, the error reappeared, but this time the error is related to the “Кнопка Яндекс Денег” plugin. Screen: https://yadi.sk/i/0ghYQ4rxjCP35g
I deactivated “Кнопка Яндекс Денег” plugin, the problem disappeared.
So the problem is in the “Кнопка Яндекс Денег” plugin?
Hello @shmanich
Assuming you are using the latest version of all the plugins, themes, and WordPress (please update if not yet), it would seem like a conflict with one of the plugins or the theme you are using.
To determine that, please follow this troubleshooting guide:
https://rankmath.com/kb/check-plugin-conflicts/
Only the site admin would know and your users won’t be affected by this troubleshooting.
Looking forward to helping you. Thank you.