Fill Missing Values Tool has failed to Open

[ClaudiaCaceres4]

Hello, I am trying to run the Fill Missing Values tool but I get an error saying the tool has failed to open. I already installed the scikit-learn packages. 

Has anyone had the same error? If yes, would you please help me identify the possible error. 

Thank you. Really appreciate it! 🙂 

[KennyYue]

I think the best way to deal with this is to set the Project Environment back to the default. 

I ran into the same problem when I clone the default to add packages and make updates. It automatically lead to some of many script stop working. Especially the stpm (Space Time Pattern Mining Tools). I believe that's another reason why Esri stop allowing users to modify the default Python Environment. It will mess up script running in ArcGIS Pro. 

I hope is helps.

[ShalenBlock]

I had the same error, so I ran the tool in the python window; lose the [] if you are only filling one field:

# Import arcpy module
import arcpy

# Set geoprocessing environments
arcpy.env.workspace = r"C:\Users\Documents\yourGeodatabase.gdb"
arcpy.env.overwriteOutput = True

# Fill missing values using a feature set and related table
try:

# Fill missing values in a feature class and a related table 
arcpy.FillMissingValues_stpm("Feature_in", "Feature_in_Filled", ["field1", "field2", "field3"], "AVERAGE", "K_NEAREST_NEIGHBORS", "", "", "", 100)

except arcpy.ExecuteError:
# If any error occurred when running the tool, print the messages
print(arcpy.GetMessages())