remove visualization df if invalid

Author: m-philipps

petab/v1/core.py

@@ -15,6 +15,7 @@
 
 from . import yaml
 from .C import *  # noqa: F403
+from .visualize.lint import validate_visualization_df
 
 logger = logging.getLogger(__name__)
 __all__ = [
@@ -299,6 +300,10 @@ def flatten_timepoint_specific_output_overrides(
     petab_problem.observable_df.index.name = OBSERVABLE_ID
     petab_problem.measurement_df = pd.concat(new_measurement_dfs)
 
+    # remove visualization df if it is invalid
+    if not validate_visualization_df(petab_problem):
+        petab_problem.visualization_df = None
+
 
 def unflatten_simulation_df(
     simulation_df: pd.DataFrame,