Rename and recreate the default Anime config if cache setup fails

rog-anime/src/diagonal.rs

@@ -3,6 +3,8 @@
 use std::path::Path;
 use std::time::Duration;
 
+use log::error;
+
 use crate::data::AnimeDataBuffer;
 use crate::error::{AnimeError, Result};
 use crate::AnimeType;
@@ -49,7 +51,10 @@ impl AnimeDiagonal {
         bright: f32,
         anime_type: AnimeType,
     ) -> Result<Self> {
-        let data = std::fs::read(path)?;
+        let data = std::fs::read(path).map_err(|e| {
+            error!("Could not open {path:?}: {e:?}");
+            e
+        })?;
         let data = std::io::Cursor::new(data);
         let decoder = png_pong::Decoder::new(data)?.into_steps();
         let png_pong::Step { raster, delay: _ } = decoder.last().ok_or(AnimeError::NoFrames)??;