Fixed Follow/ IID evaluation

src/robofish/evaluate/evaluate.py

@@ -549,7 +549,10 @@ def evaluate_follow_iid(
     # Created an issue
     fig = plt.figure(figsize=(6 * len(grids), 6))
 
-    fig.suptitle(f"follow/iid: from left to right:\n{', '.join(labels)}", fontsize=12)
+    fig.suptitle(
+        f"follow/iid: from left to right:\n{', '.join([str(l) for l in labels])}",
+        fontsize=12,
+    )
     gs = gridspec.GridSpec(1, len(grids))
 
     for i in range(len(grids)):