Update app.py

app.py

@@ -909,13 +909,14 @@ with ui.navset_card_tab(id="tab"):
             multiple=False,  
         )
         
-        
+        import matplotlib as mpl
         @render.plot
         def plot():  
             df = pd.read_csv('kmers.csv')
             k = input.kmer()
             top_k = input.top_k()
             fig = None
+            mpl.rcParams.update(mpl.rcParamsDefault)
             if input.plot_type() == "count":
                 df = df[df['k'] == k]
                 df = df.head(top_k)