Conflicts between plugins and themes are a common issue on WordPress sites. They might by caused by software bugs, but also by two different plugins doing something correctly but canceling each other out. There are also cases when a plugin causes a warning or error that affects the functionality of other plugins.
In some cases a conflict can be solved by adjusting the code in one of the conflicting pieces, but sometimes you may have to decide to abandon one of them and search for an alternative.
If you need to find out if a plugin or theme is conflicting with one of our plugins, please follow these steps:
- Disable all other other plugins. (You will find them later under the "recently active" section, and you don't delete their data just be deactiving them.)
- Switch the themes to one of the default themes (e.g. "Twenty-...")
- Open another tab in your browser and check if the error has disappeared. If so, it looks indeed like a conflict. Keep that tab open.
- Reactivate your plugins and your previous theme one-by-one. After each step, return to that second tab and check again if the error is back. The plugin (or theme) that causes the error to re-appear is the conflicting one.
If you are on a live site and cannot disable plugins or themes, you may have to create an identical test site with the same extensions installed.