RuntimeError when using PhotoLab CurveBatch script in GIMP

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I am trying to use the PhotoLab Curve Batch script in GIMP to apply a curve to a batch of images in a folder. However, I am getting a "RuntimeError: 実行時エラー" error when running the script in certain folders, but it works fine in other folders.
Details:

• GIMP version: 2.10
  
  
• Script version: 2.0
  
  
• Operating system: Windows 10
  
  
• Error message:
  

Code:

Traceback (most recent call last):
 File "C:\Users\xxx\AppData\Local\Programs\GIMP 2\lib\gimp\2.0\python/gimpfu.py", line 741, in response
   dialog.res = run_script(params)
 File "C:\Users\xxx\AppData\Local\Programs\GIMP 2\lib\gimp\2.0\python/gimpfu.py", line 362, in run_script
   return apply(function, params)
 File "C:\Users\xxx\AppData\Roaming\GIMP\2.10\plug-ins\photolab_curvebatch.py", line 150, in python_fu_curvebatch_xtns
   process_files( filepathnames, curvefilename );
 File "C:\Users\xxx\AppData\Roaming\GIMP\2.10\plug-ins\photolab_curvebatch.py", line 126, in process_files
   pdb.gimp_curves_spline( imglayer, HISTOGRAM_RED, len(icurvered), icurvered )
RuntimeError: 実行時エラー

• The script works fine in some folders, but not in others.
  
  
• The files in the problematic folders are all JPEG images.
  
  
• I have tried changing the curve file, but the error persists.
  

Questions:

1. What could be the cause of this error?
   
   
2. How can I fix this error?
   

Additional information:

• I have attached a sample image from the problematic folder.
  

I would appreciate any help in resolving this issue.
Thank you.