Arcpy ExecuteError: ERROR 999999: Error executing function.

Arcpy ExecuteError: ERROR 999999: Error executing function.
Failed to execute (Reclassify).

import arcpy
from arcpy import env
from arcpy.sa import *
import os
import numpy as np
arcpy.CheckOutExtension("Spatial")
scenario='SSP4'
area='test_area'
workpath='E:\\China_build_volume\\'+area+"\\Data\\"+scenario
origin_urban=r"E:\\Greater bay Area\\Data\\StaticVars\\150m\\BuiltArea.tif"
fishnet=r"E:\\China_build_volume\\test_area\\building\\fishnet.shp"
env.workspace = workpath
for i in range(3,10):
    run_ind=str(i)
    Flus_result=workpath+"\\"+scenario+"_"+run_ind+"_flus.tif"
#reclassify
    Flus_reclassify= Reclassify(Flus_result, "Value",RemapValue([[1,0],[2,1],[3,0],[128,0]]))
    print (1)
    arcpy.env.mask = (origin_urban)
    arcpy.env.extent = (origin_urban)
#calculate UrbanGrid
    UrbanGrid = ZonalStatistics(fishnet, "FID", Flus_reclassify, "SUM","")
    print (2)
    arcpy.Resample_management(UrbanGrid, workpath+"\\150m\\Input\\"+scenario+"_"+run_ind+"_UrbanGrid.img", "150 150", "NEAREST")
#calculate GrowthGrid
    GrowthGrid=workpath+"\\150m\\Input\\"+scenario+"_"+run_ind+"_GrowthGrid.img"
    UrbanGrid =workpath+"\\150m\\Input\\"+scenario+"_"+run_ind+"_UrbanGrid.img" 
    express='Con(' + "'"  + UrbanGrid + "'" + '>' + "'"  + origin_urban + "'" + ',1,0)'
    arcpy.gp.rastercalculator_sa(express, GrowthGrid)
    del Flus_reclassify; del  Flus_result

运行第一个循环时能正常运行，但是到第二个循环，运行到python Flus_reclassify= Reclassify(Flus_result, "Value",RemapValue([[1,0],[2,1],[3,0],[128,0]]))开始就报错了

Traceback (most recent call last):
  File "C:\Users\gislfzhao\Desktop\bash2.py", line 17, in <module>
    Flus_reclassify= Reclassify(Flus_result, "Value",RemapValue([[1,0],[2,1],[3,0],[128,0]]))
  File "C:\Program Files (x86)\ArcGIS\Desktop10.4\ArcPy\arcpy\sa\Functions.py", line 5753, in Reclassify
    missing_values)
  File "C:\Program Files (x86)\ArcGIS\Desktop10.4\ArcPy\arcpy\sa\Utils.py", line 53, in swapper
    result = wrapper(*args, **kwargs)
  File "C:\Program Files (x86)\ArcGIS\Desktop10.4\ArcPy\arcpy\sa\Functions.py", line 5747, in Wrapper
    missing_values)
  File "C:\Program Files (x86)\ArcGIS\Desktop10.4\ArcPy\arcpy\geoprocessing\_base.py", line 506, in <lambda>
    return lambda *args: val(*gp_fixargs(args, True))
ExecuteError: ERROR 999999: Error executing function.
Failed to execute (Reclassify).

请问这是怎么回事呢