No matter what parameters I enter for the contouring, I always get the response in the log of "The following layers were not correctly generated." I'm working QGIS 3.6. I am not familiar with this program at all. What can I do to solve this?

Screenshot of the log of the contouring process

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    Hi Adam, and welcome to the GIS Stack Exchange! A good question should include as much information as possible about what you're doing and why. Posting the log response is definitely a good thing, but could you elaborate about the data you're using? The log seems to suggest that you're using an .img file to try and extract contours from, which would not work. Also, is there a reason that you need to extract your own contours? That sort of data is usually easy to find for free. – JoshC May 8 at 15:31
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    Are you perhaps using Mac? The error is the same as in gis.stackexchange.com/questions/321927/…, that is, "command not found". Let's hope that staff at your school can correct the QGIS installation for you, the students. – user30184 May 8 at 16:08
  • Thanks for the quick response! Yes I am using a mac. I am in fact using a .img file, that is likely the issue. I am trying to get contours from a DEM. I don't know how to get the file I want in a different file type, but I'll look on different websites where the same stuff is available. I'll let you know how that goes! – Adam May 9 at 13:40
  • Also, what file type would work? I am trying to extract my own contours for a project that needs specified topographical intervals and they need to be in a form that can be put into Adobe Illustrator as a line to be printed on a laser cutter. – Adam May 9 at 14:04

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