A plugin conflict happens when two separate plugins are activated at the same time and either of them experiences unusual behavior because of how it interacts with the other. The interaction may not always obvious, so there is no room for assumptions.

Any two plugins can conflict with each other.

The same goes for theme conflicts which occur less likely.

Here are two documentations that help you troubleshoot your Wordpress install and detect possible theme or plugin conflicts.

How to check for Plugin and theme conflicts

How to Test for a Plugin Conflict with eLearnCommerce

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