Fix InvalidOperationException

✅ Solution

InvalidOperationException in Azure Functions often stems from concurrency issues during initialization of singleton clients like BlobServiceClient or language workers. To fix it, ensure proper locking mechanisms or lazy initialization patterns are used for singleton objects, and verify your FUNCTIONS_WORKER_RUNTIME setting is correctly configured and that the associated language worker is properly installed to avoid worker initialization failures. Reducing the complexity of startup logic and dependencies can also help prevent race conditions.