Handle errors in load_last_diff and update_loop functions with logging

[karlTGA]

This pull request improves error handling in the data loading and update logic to make the system more robust and informative when failures occur. Instead of propagating errors, the code now logs them and continues execution, which helps prevent crashes due to transient issues.

Error handling improvements:

• Updated load_last_diff to catch errors from load_url, log the error message, and return early instead of propagating the error. This prevents the function from failing completely if loading the data fails.
• Modified update_loop to catch errors from update_local_database, log a warning, and continue the loop, ensuring that temporary update failures do not interrupt the update cycle.

[Copilot]

Pull request overview

This pull request attempts to improve error handling in data loading and update operations by catching errors and logging them instead of propagating failures. However, the changes introduce a critical bug where error handling becomes inconsistent.

Key Changes:

• Modified load_last_diff to catch and swallow errors from load_url, returning success even on failure
• Updated update_loop to catch errors from update_local_database and log retry messages
• Changed error propagation strategy from fail-fast to continue-on-error

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