Invalid file identifier. Use fopen to generate a valid file identifier.
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Aditya Jha on 14 Nov 2022
The problem seems to have occurred because the file does not exist or cannot be opened.Try providing the correct path to the file “Absatz_Biegung.inp”.
Even after providing the correct path to input file, if it does not work, then refer to the documentation of “fopen“ and try passing fileID for the inputFile parameter.