diff --git a/pina/solver/solver.py b/pina/solver/solver.py
index 6948ec664..a9da409e2 100644
--- a/pina/solver/solver.py
+++ b/pina/solver/solver.py
@@ -33,7 +33,7 @@ def __init__(self, problem, weighting, use_lt):
         :param bool use_lt: If ``True``, the solver uses LabelTensors as input.
         """
         super().__init__()
-
+        tttt
         # check consistency of the problem
         check_consistency(problem, AbstractProblem)
         self._check_solver_consistency(problem)
diff --git a/pina/trainer.py b/pina/trainer.py
index 78dd77adf..9cdc3bc3c 100644
--- a/pina/trainer.py
+++ b/pina/trainer.py
@@ -70,6 +70,7 @@ def __init__(
             Trainer API
             <https://lightning.ai/docs/pytorch/stable/common/trainer.html#trainer-class-api>`_.
         """
+        ttt
         # check consistency for init types
         self._check_input_consistency(
             solver=solver,