Display name of error latent file

When trying to load stored latents, if an error occurs, this change will tell you what file failed to load
Currently it will just tell you that something failed without telling you which file

library/train_util.py

@@ -2123,18 +2123,21 @@ def is_disk_cached_latents_is_expected(reso, npz_path: str, flip_aug: bool):
     if not os.path.exists(npz_path):
         return False
 
-    npz = np.load(npz_path)
-    if "latents" not in npz or "original_size" not in npz or "crop_ltrb" not in npz:  # old ver?
-        return False
-    if npz["latents"].shape[1:3] != expected_latents_size:
-        return False
-
-    if flip_aug:
-        if "latents_flipped" not in npz:
+    try:
+        npz = np.load(npz_path)
+        if "latents" not in npz or "original_size" not in npz or "crop_ltrb" not in npz:  # old ver?
             return False
-        if npz["latents_flipped"].shape[1:3] != expected_latents_size:
+        if npz["latents"].shape[1:3] != expected_latents_size:
             return False
 
+        if flip_aug:
+            if "latents_flipped" not in npz:
+                return False
+            if npz["latents_flipped"].shape[1:3] != expected_latents_size:
+                return False
+    except:
+        raise RuntimeError(f"Error loading file: {npz_path}")
+
     return True