I have the same issue. Although i have woocommerce installed, this doesn’t seem to be the problem. I am using Setsail Theme. With this theme i need a plugin called “Tours” which i obviously need while using the theme. Untill a couple of days ago all was fine, but now receiving the same error as mentioned above. When i DE-Activate the TOUR plugin, error is gone. As soon as i activate the plugin again, the error is there again. I read somewhere that it could have something to do with an update within WordPress ? No clue so far…
Max
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This reply was modified 4 years, 6 months ago by kritinet.