"Application context timed out" on plugin installation

Hi,

one of our customers is reporting an error upon installation of our data center app. The log states:

2023-07-11 14:59:32,972 ERROR [Spring DM Context Creation Timer] [extender.internal.support.ExtenderConfiguration] onOsgiApplicationEvent Application context refresh failed (NonValidatingOsgiBundleXmlApplicationContext(bundle=com.yworks.plugins.confluence.graphity, config=osgibundle:/META-INF/spring/*.xml))
org.springframework.context.ApplicationContextException: Application context initialization for 'com.yworks.plugins.confluence.graphity' has timed out waiting for (&(objectClass=com.atlassian.mywork.service.LocalNotificationService)(objectClass=com.atlassian.mywork.service.LocalNotificationService))

2023-07-11 15:36:12,489 ERROR [Spring DM Context Creation Timer] [extender.internal.support.ExtenderConfiguration] onOsgiApplicationEvent Application context refresh failed (NonValidatingOsgiBundleXmlApplicationContext(bundle=com.yworks.plugins.confluence.graphity, config=osgibundle:/META-INF/spring/*.xml))

Unfortunately, I’m absolutely at a loss where even to start looking - is this an incompatibility between our app and confluence? Something we need to do differently? A recent change in confluence? Spring weirdness?

Customer has no problem getting this up and running on a test instance, so it’s not a general problem with our app.

Can someone give me some pointers?

Thank you so much!
Jasmine