Error in the Experience Profile After Installing Coveo for Sitecore

Coveo for Sitecore 4.1.342.10 (May 2018)

Symptoms

In Sitecore 9.0+, when installing Coveo for Sitecore, the Experience Profile stops showing events and instead displays the An error occurred. error message.

Cause

The issue is caused by custom processors that aren’t supported in xConnect.

Resolution

Removing the processors brings back the events:

1. In your Sitecore instance folder, navigate to App_Config \Modules\Coveo.

2. In the Coveo.ExperienceProfile.config file, replace the file content with the following code:

   <!--
       Don't modify this configuration file.
       Instead, you should patch this file using Coveo.ExperienceProfile.Custom.config.
   -->
   <configuration xmlns:patch="http://www.sitecore.net/xmlconfig/" xmlns:coveo="http://www.sitecore.net/xmlconfig/coveo/">
     <sitecore coveo:require="!disabled">
       <!-- 
           Previous processors were removed due to an issue causing an error in the Experience Profile.
           Event Types sent from Coveo for Sitecore in xConnect won't be visible in the Experience Profile.
       -->
     </sitecore>
   </configuration>