: The font is likely embedded but corrupted. Use Adobe Acrobat’s “Preflight” tool or try opening in a different PDF viewer (Foxit, PDF-XChange).
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: Often uses Identity-H encoding to map characters to specific glyphs within the PDF. : The font is likely embedded but corrupted
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If you are seeing a "CIDFont+F1 missing" error, it usually means the PDF is trying to use one of these standard fonts that wasn't correctly linked: Arial (Bold)