React application not starting

npm start failing due to NaN values in 1dsfm_outlier_angular_errors_deg, averaging_metrics.json

Start by reproducing the failure with npm start and inspect averaging_metrics.json, focusing on the 1dsfm_outlier_angular_errors_deg values. Trace how that data is loaded by the React application. Done means the application starts without failing on NaN values and the affected metrics remain valid.

Written by the indexing model from the issue text.