Fixed bug in per-question workflow setup

Author: agohr

app/math_tutor.py

@@ -60,8 +60,8 @@ def process_input(self, submission: str, exemplary_solution: str, temperature: f
                 workflow_path = exemplary_solution_data["workflow"]
                 # complete path to absolute path
                 workflow_full_path = os.path.join(os.path.dirname(self.config_path), workflow_path)
-                print(f"Loading workflow from: {workflow_path}")
-                with open(workflow_path, 'r') as f:
+                print(f"Loading workflow from: {workflow_full_path}")
+                with open(workflow_full_path, 'r') as f:
                     workflow_config = json.load(f)
                     workflow_override = workflow_config.get('directives')