Warning Message:
LaTeX-incompatible input and strict mode is set to 'warn': Unrecognized Unicode character "" (8203) [unknownSymbol]
No character metrics for '' in style 'Main-Regular' and mode 'text'The unicode ​) is the zero-width space. This invisible character takes up no space, making it nearly impossible to spot, even inside your LaTeX equations. You’ll need to carefully examine your LaTeX code, potentially using a text editor that can display invisible characters, to locate and remove any instances of Unicode 8203.