What does it mean when the error message "unable to open image" is accompanied by the exception "ImagickException", leading to a fatal error?

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The error message "unable to open image" accompanied by the exception "ImagickException" indicates that there is an issue in opening an image file using the Imagick library. The fatal error suggests that the program cannot proceed any further and needs to be terminated. This error can occur due to various reasons, including incorrect file format, corrupt image file, or insufficient permissions to access the image file. It is essential to investigate the root cause of the issue to resolve the error and enable the program to function correctly.