The heading 1 "Chapter 1" is replaced by a black sign!!!!!! why?
The heading 1 "Chapter 1" is replaced by a black sign!!!!!! why?
please, see the attached image that shows my question
heading 1 has the format Chapter 1, Chapter 2, ..... suddenly these headings were replaced by black sign
what might be the reason?
thank you
regards
Jamal
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