try to fix RAY

app.py

@@ -47,8 +47,6 @@ def make_env(seed, instance):
 
 
 def solve(file):
-    ray.init(log_to_driver=False,
-             include_dashboard=False)
     random.seed(0)
     np.random.seed(0)
     torch.manual_seed(0)
@@ -149,6 +147,9 @@ def solve(file):
         reloadedPILImage = Image.open(buffer)
         return pretty_output, reloadedPILImage, str(total_time) + " seconds"
 
+ray.init(log_to_driver=False,
+        ignore_reinit_error=True,
+        include_dashboard=False)
 title = "Job-Shop Scheduling CP RL"
 description = "A Job-Shop Scheduling Reinforcement Learning based solver, using an underlying CP model as an " \
               "environment. \n" \