PdfReadWarning: Object 225 0 not defined. [pdf.py:1629]
Traceback (most recent call last):
File "/home/mert/Desktop/pdf_merge/pdf_merge.py", line 30, in <module>
merger.write(fout)
File "/home/mert/anaconda3/envs/pdf_merge/lib/python3.6/site-packages/PyPDF2/merger.py", line 230, in write
self.output.write(fileobj)
File "/home/mert/anaconda3/envs/pdf_merge/lib/python3.6/site-packages/PyPDF2/pdf.py", line 482, in write
self._sweepIndirectReferences(externalReferenceMap, self._root)
File "/home/mert/anaconda3/envs/pdf_merge/lib/python3.6/site-packages/PyPDF2/pdf.py", line 571, in _sweepIndirectReferences
self._sweepIndirectReferences(externMap, realdata)
File "/home/mert/anaconda3/envs/pdf_merge/lib/python3.6/site-packages/PyPDF2/pdf.py", line 547, in _sweepIndirectReferences
value = self._sweepIndirectReferences(externMap, value)
File "/home/mert/anaconda3/envs/pdf_merge/lib/python3.6/site-packages/PyPDF2/pdf.py", line 571, in _sweepIndirectReferences
self._sweepIndirectReferences(externMap, realdata)
File "/home/mert/anaconda3/envs/pdf_merge/lib/python3.6/site-packages/PyPDF2/pdf.py", line 547, in _sweepIndirectReferences
value = self._sweepIndirectReferences(externMap, value)
File "/home/mert/anaconda3/envs/pdf_merge/lib/python3.6/site-packages/PyPDF2/pdf.py", line 556, in _sweepIndirectReferences
value = self._sweepIndirectReferences(externMap, data[i])
File "/home/mert/anaconda3/envs/pdf_merge/lib/python3.6/site-packages/PyPDF2/pdf.py", line 571, in _sweepIndirectReferences
self._sweepIndirectReferences(externMap, realdata)
File "/home/mert/anaconda3/envs/pdf_merge/lib/python3.6/site-packages/PyPDF2/pdf.py", line 547, in _sweepIndirectReferences
value = self._sweepIndirectReferences(externMap, value)
File "/home/mert/anaconda3/envs/pdf_merge/lib/python3.6/site-packages/PyPDF2/pdf.py", line 577, in _sweepIndirectReferences
newobj = data.pdf.getObject(data)
File "/home/mert/anaconda3/envs/pdf_merge/lib/python3.6/site-packages/PyPDF2/pdf.py", line 1631, in getObject
raise utils.PdfReadError("Could not find object.")
PyPDF2.utils.PdfReadError: Could not find object.
Process finished with exit code 1
Example PDF given in the attachment.