An error has occurred while executing Python code

[Nmodjrian]

Hi,

I want to generate DSM by DSM Generator but the I got the following Python error:

2022-06-23T13:14:34 WARNING Traceback (most recent call last):
File "C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\DSMGenerator\dsm_generator.py", line 645, in start_progress
dsm_array = np.array(dsm_raster.ReadAsArray().astype(np.float))
AttributeError: 'NoneType' object has no attribute 'ReadAsArray'

I am new user of UMEP with little knwoledge of python. My questions are:

• Is it because of my input file?
• If it happened because of executing Python code, how I can solve this?
• Is there any bug in QGIS 3.24.3?

I would appreciate your help!

Here are some other details that might be helpful to figure out this issue

Under Log Messages I have the following tabs:

Python warning

2022-06-23T13:11:49 WARNING warning:D:\PROGRA1/QGIS321.3/apps/qgis/./python\qgis\utils.py:888: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses
mod = _builtin_import(name, globals, locals, fromlist, level)

         traceback: File "", line 1, in 
          File "D:\PROGRA~1/QGIS32~1.3/apps/qgis/./python\qgis\utils.py", line 443, in startPlugin
          if not _startPlugin(packageName):
          File "D:\PROGRA~1/QGIS32~1.3/apps/qgis/./python\qgis\utils.py", line 423, in _startPlugin
          plugins[packageName] = package.classFactory(iface)
          File "C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\__init__.py", line 34, in classFactory
          from .UMEP import UMEP
          File "D:\PROGRA~1/QGIS32~1.3/apps/qgis/./python\qgis\utils.py", line 888, in _import
          mod = _builtin_import(name, globals, locals, fromlist, level)
          File "", line 1007, in _find_and_load
          File "", line 986, in _find_and_load_unlocked
          File "", line 680, in _load_unlocked
          File "", line 855, in exec_module
          File "", line 228, in _call_with_frames_removed
          File "C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\UMEP.py", line 32, in 
          from .SkyViewFactorCalculator.svf_calculator import SkyViewFactorCalculator
          File "D:\PROGRA~1/QGIS32~1.3/apps/qgis/./python\qgis\utils.py", line 888, in _import
          mod = _builtin_import(name, globals, locals, fromlist, level)
          File "", line 1007, in _find_and_load
          File "", line 986, in _find_and_load_unlocked
          File "", line 680, in _load_unlocked
          File "", line 855, in exec_module
          File "", line 228, in _call_with_frames_removed
          File "C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\SkyViewFactorCalculator\svf_calculator.py", line 24, in 
          from future import standard_library
          File "D:\PROGRA~1/QGIS32~1.3/apps/qgis/./python\qgis\utils.py", line 888, in _import
          mod = _builtin_import(name, globals, locals, fromlist, level)
          File "", line 1058, in _handle_fromlist
          File "", line 228, in _call_with_frames_removed
          File "", line 1007, in _find_and_load
          File "", line 986, in _find_and_load_unlocked
          File "", line 680, in _load_unlocked
          File "", line 855, in exec_module
          File "", line 228, in _call_with_frames_removed
          File "D:\PROGRA~1\QGIS32~1.3\apps\Python39\lib\site-packages\future\standard_library\__init__.py", line 65, in 
          import imp
          File "D:\PROGRA~1/QGIS32~1.3/apps/qgis/./python\qgis\utils.py", line 888, in _import
          mod = _builtin_import(name, globals, locals, fromlist, level)
          File "", line 1007, in _find_and_load
          File "", line 986, in _find_and_load_unlocked
          File "", line 680, in _load_unlocked
          File "", line 855, in exec_module
          File "", line 228, in _call_with_frames_removed
          File "D:\PROGRA~1\QGIS32~1.3\apps\Python39\lib\imp.py", line 31, in 
          warnings.warn("the imp module is deprecated in favour of importlib; "

2022-06-23T13:11:49 WARNING warning:D:\PROGRA1\QGIS321.3\apps\Python39\lib\site-packages\scipy_init_.py:138: UserWarning: A NumPy version >=1.16.5 and warnings.warn(f"A NumPy version >={np_minversion} and ", line 1, in
File "D:\PROGRA1/QGIS321.3/apps/qgis/./python\qgis\utils.py", line 443, in startPlugin
if not _startPlugin(packageName):
File "D:\PROGRA1/QGIS321.3/apps/qgis/./python\qgis\utils.py", line 423, in startPlugin
plugins[packageName] = package.classFactory(iface)
File "C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP_init.py", line 34, in classFactory
from .UMEP import UMEP
File "D:\PROGRA1/QGIS321.3/apps/qgis/./python\qgis\utils.py", line 888, in _import
mod = _builtin_import(name, globals, locals, fromlist, level)
File "", line 1007, in _find_and_load
File "", line 986, in _find_and_load_unlocked
File "", line 680, in _load_unlocked
File "", line 855, in exec_module
File "", line 228, in _call_with_frames_removed
File "C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\UMEP.py", line 33, in
from .ImageMorphParam.image_morph_param import ImageMorphParam
File "D:\PROGRA1/QGIS321.3/apps/qgis/./python\qgis\utils.py", line 888, in _import
mod = _builtin_import(name, globals, locals, fromlist, level)
File "", line 1007, in _find_and_load
File "", line 986, in _find_and_load_unlocked
File "", line 680, in _load_unlocked
File "", line 855, in exec_module
File "", line 228, in _call_with_frames_removed
File "C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\ImageMorphParam\image_morph_param.py", line 36, in
from ..Utilities.imageMorphometricParms_v1 import *
File "D:\PROGRA1/QGIS321.3/apps/qgis/./python\qgis\utils.py", line 888, in _import
mod = _builtin_import(name, globals, locals, fromlist, level)
File "", line 1007, in _find_and_load
File "", line 986, in _find_and_load_unlocked
File "", line 680, in _load_unlocked
File "", line 855, in exec_module
File "", line 228, in _call_with_frames_removed
File "C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\Utilities\imageMorphometricParms_v1.py", line 28, in
import scipy.ndimage.interpolation as sc
File "D:\PROGRA1/QGIS321.3/apps/qgis/./python\qgis\utils.py", line 888, in _import
mod = _builtin_import(name, globals, locals, fromlist, level)
File "", line 1007, in _find_and_load
File "", line 972, in _find_and_load_unlocked
File "", line 228, in _call_with_frames_removed
File "", line 1007, in _find_and_load
File "", line 972, in _find_and_load_unlocked
File "", line 228, in _call_with_frames_removed
File "", line 1007, in _find_and_load
File "", line 986, in _find_and_load_unlocked
File "", line 680, in _load_unlocked
File "", line 855, in exec_module
File "", line 228, in call_with_frames_removed
File "D:\PROGRA1\QGIS321.3\apps\Python39\lib\site-packages\scipy_init.py", line 138, in
warnings.warn(f"A NumPy version >={np_minversion} and
2022-06-23T13:11:52 WARNING warning:C:\Users\Niusha\AppData\Roaming\Python\Python39\site-packages\pandas\core\reshape\merge.py:916: FutureWarning: In a future version, the Index constructor will not infer numeric dtypes when passed object-dtype sequences (matching Series behavior)
key_col = Index(lvals).where(~mask_left, rvals)

         traceback: File "", line 1, in 
          File "D:\PROGRA~1/QGIS32~1.3/apps/qgis/./python\qgis\utils.py", line 443, in startPlugin
          if not _startPlugin(packageName):
          File "D:\PROGRA~1/QGIS32~1.3/apps/qgis/./python\qgis\utils.py", line 423, in _startPlugin
          plugins[packageName] = package.classFactory(iface)
          File "C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\__init__.py", line 34, in classFactory
          from .UMEP import UMEP
          File "D:\PROGRA~1/QGIS32~1.3/apps/qgis/./python\qgis\utils.py", line 888, in _import
          mod = _builtin_import(name, globals, locals, fromlist, level)
          File "", line 1007, in _find_and_load
          File "", line 986, in _find_and_load_unlocked
          File "", line 680, in _load_unlocked
          File "", line 855, in exec_module
          File "", line 228, in _call_with_frames_removed
          File "C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\UMEP.py", line 53, in 
          from .SuewsSimple.suews_simple import SuewsSimple
          File "D:\PROGRA~1/QGIS32~1.3/apps/qgis/./python\qgis\utils.py", line 888, in _import
          mod = _builtin_import(name, globals, locals, fromlist, level)
          File "", line 1007, in _find_and_load
          File "", line 986, in _find_and_load_unlocked
          File "", line 680, in _load_unlocked
          File "", line 855, in exec_module
          File "", line 228, in _call_with_frames_removed
          File "C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\SuewsSimple\suews_simple.py", line 35, in 
          from ..suewsmodel import suews_wrapper
          File "D:\PROGRA~1/QGIS32~1.3/apps/qgis/./python\qgis\utils.py", line 888, in _import
          mod = _builtin_import(name, globals, locals, fromlist, level)
          File "", line 1007, in _find_and_load
          File "", line 986, in _find_and_load_unlocked
          File "", line 680, in _load_unlocked
          File "", line 855, in exec_module
          File "", line 228, in _call_with_frames_removed
          File "C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\suewsmodel\__init__.py", line 9, in 
          import supy as sp
          File "D:\PROGRA~1/QGIS32~1.3/apps/qgis/./python\qgis\utils.py", line 888, in _import
          mod = _builtin_import(name, globals, locals, fromlist, level)
          File "", line 1007, in _find_and_load
          File "", line 986, in _find_and_load_unlocked
          File "", line 680, in _load_unlocked
          File "", line 855, in exec_module
          File "", line 228, in _call_with_frames_removed
          File "C:\Users\Niusha\AppData\Roaming\Python\Python39\site-packages\supy\__init__.py", line 17, in 
          from ._supy_module import (
          File "D:\PROGRA~1/QGIS32~1.3/apps/qgis/./python\qgis\utils.py", line 888, in _import
          mod = _builtin_import(name, globals, locals, fromlist, level)
          File "", line 1007, in _find_and_load
          File "", line 986, in _find_and_load_unlocked
          File "", line 680, in _load_unlocked
          File "", line 855, in exec_module
          File "", line 228, in _call_with_frames_removed
          File "C:\Users\Niusha\AppData\Roaming\Python\Python39\site-packages\supy\_supy_module.py", line 28, in 
          from ._check import check_forcing, check_state
          File "D:\PROGRA~1/QGIS32~1.3/apps/qgis/./python\qgis\utils.py", line 888, in _import
          mod = _builtin_import(name, globals, locals, fromlist, level)
          File "", line 1007, in _find_and_load
          File "", line 986, in _find_and_load_unlocked
          File "", line 680, in _load_unlocked
          File "", line 855, in exec_module
          File "", line 228, in _call_with_frames_removed
          File "C:\Users\Niusha\AppData\Roaming\Python\Python39\site-packages\supy\_check.py", line 11, in 
          from ._load import dict_var_type_forcing
          File "D:\PROGRA~1/QGIS32~1.3/apps/qgis/./python\qgis\utils.py", line 888, in _import
          mod = _builtin_import(name, globals, locals, fromlist, level)
          File "", line 1007, in _find_and_load
          File "", line 986, in _find_and_load_unlocked
          File "", line 680, in _load_unlocked
          File "", line 855, in exec_module
          File "", line 228, in _call_with_frames_removed
          File "C:\Users\Niusha\AppData\Roaming\Python\Python39\site-packages\supy\_load.py", line 216, in 
          df_var_info = df_info_suews_cal_multitsteps.merge(
          File "C:\Users\Niusha\AppData\Roaming\Python\Python39\site-packages\pandas\core\frame.py", line 9345, in merge
          return merge(
          File "C:\Users\Niusha\AppData\Roaming\Python\Python39\site-packages\pandas\core\reshape\merge.py", line 122, in merge
          return op.get_result()
          File "C:\Users\Niusha\AppData\Roaming\Python\Python39\site-packages\pandas\core\reshape\merge.py", line 738, in get_result
          self._maybe_add_join_keys(result, left_indexer, right_indexer)
          File "C:\Users\Niusha\AppData\Roaming\Python\Python39\site-packages\pandas\core\reshape\merge.py", line 916, in _maybe_add_join_keys
          key_col = Index(lvals).where(~mask_left, rvals)
          File "C:\Users\Niusha\AppData\Roaming\Python\Python39\site-packages\pandas\core\indexes\base.py", line 494, in __new__
          arr = _maybe_cast_data_without_dtype(
          File "C:\Users\Niusha\AppData\Roaming\Python\Python39\site-packages\pandas\core\indexes\base.py", line 7137, in _maybe_cast_data_without_dtype
          warnings.warn(

2022-06-23T13:14:34 WARNING warning:C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\DSMGenerator\dsm_generator.py:643: DeprecationWarning: np.float is a deprecated alias for the builtin float. To silence this warning, use float by itself. Doing this will not modify any behavior and is safe. If you specifically wanted the numpy scalar type, use np.float64 here.
Deprecated in NumPy 1.20; for more details and guidance: https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations
dem_array = np.array(dem_raster.ReadAsArray().astype(np.float))

         traceback: File "C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\UMEP.py", line 518, in DSMG
          sg.run()
          File "C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\DSMGenerator\dsm_generator.py", line 222, in run
          self.dlg.exec_()
          File "C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\DSMGenerator\dsm_generator.py", line 643, in start_progress
          dem_array = np.array(dem_raster.ReadAsArray().astype(np.float))
          File "D:\PROGRA~1\QGIS32~1.3\apps\Python39\lib\site-packages\numpy\__init__.py", line 295, in __getattr__
          warnings.warn(msg, DeprecationWarning, stacklevel=2)

General

2022-06-23T13:11:52 INFO UMEP - SuPy Version installed: 2022.4.7
2022-06-23T13:11:56 INFO Application state:
QGIS_PREFIX_PATH env var: D:/PROGRA1/QGIS321.3/apps/qgis
Prefix: D:/PROGRA1/QGIS321.3/apps/qgis
Plugin Path: D:/PROGRA1/QGIS321.3/apps/qgis/plugins
Package Data Path: D:/PROGRA1/QGIS321.3/apps/qgis/.
Active Theme Name: default
Active Theme Path: D:/PROGRA1/QGIS321.3/apps/qgis/./resources/themes\default\icons/
Default Theme Path: :/images/themes/default/
SVG Search Paths: D:/PROGRA1/QGIS321.7/apps/qgis-ltr/./svg/
C:/Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/svg/
C:/PROGRA1/QGIS321.7/apps/qgis-ltr/./svg/
D:/PROGRA1/QGIS321.3/apps/qgis/./svg/
User DB Path: D:/PROGRA1/QGIS321.3/apps/qgis/./resources/qgis.db
Auth DB Path: C:/Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/qgis-auth.db

Plugins
2022-06-23T13:11:53 INFO Loaded UMEP (package: UMEP)
2022-06-23T13:11:53 INFO Loaded DB Manager (package: db_manager)
2022-06-23T13:11:54 INFO Loaded GRASS GIS provider (package: grassprovider)
2022-06-23T13:11:54 INFO Loaded MetaSearch Catalog Client (package: MetaSearch)
2022-06-23T13:11:55 INFO Loaded Processing (package: processing)
2022-06-23T13:11:56 INFO Loaded SAGA GIS provider (package: sagaprovider)

Messages

2022-06-23T13:14:34 WARNING Python error : An error has occurred while executing Python code: See message log (Python Error) for more details.

Python error

2022-06-23T13:14:34 WARNING Traceback (most recent call last):
File "C:\Users/Niusha/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\DSMGenerator\dsm_generator.py", line 645, in start_progress
dsm_array = np.array(dsm_raster.ReadAsArray().astype(np.float))
AttributeError: 'NoneType' object has no attribute 'ReadAsArray'

[Nmodjrian]

I tried with the same process with the Goteborg_SWEREF99_1200 dataset and received the same error.

[Nmodjrian]

It is solved by choosing extent from layer!

[biglimp]

Great that you solved it. How did you select your extent when you got the error? Maybe there is a bug in the system that we need to fix.