The core issue centers on an environment constraint or configuration conflict within Google AI Studio, not a general application bug or a global service outage.
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Incident & Time: The ReactJS project consistently experienced a “Firebase Service Error” on October 10, 2025, at 03:00 AM.
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Key Finding (Environmental Isolation):
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Normal Function: The application functions normally when tested locally (localhost) or when deployed/published to an external hosting environment.
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Isolated Error: The error occurs exclusively within the Google AI Studio execution/development environment.
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Hypothesized Causes: The problem is likely rooted in:
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Network Restriction (Firewall): The Google AI Studio environment may impose firewall or proxy rules that block the necessary outbound connection to Firebase endpoints.
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Environment Configuration: Incorrect configuration or a mismatch in Firebase API keys/environment variables within the AI Studio setup, different from the local/public environment.
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Permissions: The service account or execution identity used by AI Studio lacks the required permissions to communicate with the Firebase service.
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Failure of Internal Fixes: Both manual code modification and AI-driven prompt diagnostics failed because the root cause lies in environment configuration or networking, which cannot be resolved by merely editing the application code.