I'm sorry, but the provided context does not contain any specific code or file that would cause a "This is a test exception!" error. The code snippets provided are initializing Flask and FastAPI applications with Sentry for error tracking, and intentionally triggering a division by zero error at the "/error" route. However, none of these would result in a "This is a test exception!" error. Without more specific information about where this error is occurring, it's impossible to provide a solution.
I'm sorry, but the provided context does not contain any specific code or file that would cause a "This is a test exception!" error. The code snippets provided are initializing Flask and FastAPI applications with Sentry for error tracking, and intentionally triggering a division by zero error at the "/error" route. However, none of these would result in a "This is a test exception!" error. Without more specific information about where this error is occurring, it's impossible to provide a solution.