Update app.py

app.py

@@ -9,6 +9,8 @@ from utils.motion_process import recover_from_ric
 import models.t2m_trans as trans
 import matplotlib.pyplot as plt
 import matplotlib
+import base64
+import io
 import mpl_toolkits.mplot3d as p3
 from matplotlib.animation import FuncAnimation, PillowWriter
 from mpl_toolkits.mplot3d import Axes3D