["python","linux","subprocess","imagemagick"]
ImageMagick not authorized to convert PDF to an image

I have a program, in which I need to convert a PDF to an image using Image Magick. I do that using the subprocess package: cmd = 'magick convert -density 300 '+pdfFile+'['+str(rangeTuple[0])+'-'+str(rangeTuple[1])+'] -depth 8 '+'temp.tiff' #WINDOWS if(os.path.isfile('temp.tiff')): os.remove('temp.tiff') subprocess.call(cmd,shell=True) im = Image.open('temp.tiff') The error I got is: convert-im6.q16: not authorized `temp2.pdf' @ error/constitute.c/ReadImage/412. convert-im6.q16: no images defined `temp.tiff' @ error/convert.c/ConvertImageCommand/3258. Traceback (most recent call last): File "UKExtraction2.py", line 855, in <module> doItAllUpper("A0","UK5.csv","temp",59,70,"box",2,1000,firstPageCoordsUK,boxCoordUK,voterBoxCoordUK,internalBoxNumberCoordUK,externalBoxNumberCoordUK,addListInfoUK) File "UKExtraction2.py", line 776, in doItAllUpper doItAll(tempPDFName,outputCSV,2,pdfs,formatType,n_blocks,writeBlockSize,firstPageCoords,boxCoord,voterBoxCoord,internalBoxNumberCoord,externalBoxNumberCoord,addListInfo,pdfName) File "UKExtraction2.py", line 617, in doItAll mainProcess(pdfName,(0,noOfPages-1),formatType,n_blocks,outputCSV,writeBlockSize,firstPageCoords,boxCoord,voterBoxCoord,internalBoxNumberCoord,externalBoxNumberCoord,addListInfo,bigPDFName,basePages) File "UKExtraction2.py", line 542, in mainProcess im = Image.open('temp.tiff') File "/home/rohit/.local/lib/python3.6/site-packages/PIL/Image.py", line 2609, in open fp = builtins.open(filename, "rb") FileNotFoundError: [Errno 2] No such file or directory: 'temp.tiff' The most important of which is: convert-im6.q16: not authorized `temp2.pdf' @ error/constitute.c/ReadImage/412. I think this is because ImageMagick isn't authorized to access the PDF. What should be done now? I'm on a Linux server. Any help is appreciated.
emcconville is correct. More specifically edit the Imagemagick policy.xml file to uncomment this line: <!-- <policy domain="module" rights="none" pattern="{PS,PDF,XPS}" /> --> And change it from rights="none" to rights="read|write" <policy domain="module" rights="read|write" pattern="{PS,PDF,XPS}" /> This was a recent addition to the policy.xml file, I believe, due to a security flaw found in the Ghostscript delegate. I think that flaw has now been fixed in the current version of Ghostscript, which is 9.25. NOTE: On some systems the policy line will have domain="coder" rather than domain="module"