elimu-ai/webapp

AI Summary: The task is to debug a NullPointerException in the `WordUsageCountScheduler` of the elimu.ai web application. The exception occurs because the `word` variable is null when attempting to access its ID, preventing the correct calculation and update of word usage counts. The fix requires identifying why the `word` variable is null within the scheduler's execution and implementing appropriate null checks or data retrieval to ensure that a valid `Word` object is always processed.

AI Summary: Fix a bug in the elimu.ai web application where editing an emoji removes existing word labels. The fix should prevent the loss of word labels when emojis are modified, improving the user experience for content creators.

AI Summary: The task involves removing the `StoryBookEPubService` class from the elimu.ai web application to simplify the codebase. This is because the service is deemed unnecessary and adds complexity without providing significant benefits. The removal should be done carefully to ensure no other parts of the application rely on this service.