Arial font shown as missing when it is not

[Inélsòre]

I am using this tool to generate barcode for ISMNs to apply to music books.

I download them as SVGs and add them to the InDesign files.

Once done, Preflights shows a font-missing error. Upon inspecting it tells me that ARIAL is the missing font.

Of course, ARIAL is installed on my Mac, and the Find/Replace font can do nothing about it, since the issue is just non-existing. The missing font is shown as "in graphic" but I cannot replace it.

Have you ever encountered this issue? What should I do?

Thanks

[Willi Adelberger]

1. How are you so sure that THIS Arial is installed on your computer?
2. Where it is installed?

[Inélsòre]

1. When I try to substitute font, I get an equally named Arial from my dropdown list, but when I select it, "Change All" or "Change" is greyed out (see picture above)
2. Font Book > Computer tab, there it is

 

[Willi Adelberger]

Important to know is not that this font is on your Computer (as it is within any Microsoft Program), but if it installed for all programs. Therefore I ask again: Where is it installed.

[Inélsòre]

This is the path as given from Finder: 

/System/Library/Fonts/Supplemental

[Willi Adelberger]

What happens if you move the font out of supplemental? One level higher directly to fonts?

[Inélsòre]

While dragging them out, the cursor becomes a forbidden sign.

It seems this folder is a read-only system one. 

[Willi Adelberger]

It is about permissions. 

You can go to your personal font folder, what I recommend and copy there the fonts you want to use to. 

1. Go to the finder.
2. Hold the alt key and go to the Go to menu. Because you hold down the alt key you see your user library.
3. In the Library is another font folder, try this one.

[aniri5j9ox8tw2ln · Accepted solution]

Open the SVG in Illustrator, find & replace the Font with your Arial and save the SVG again. That's it!

[Inélsòre]

Interestingly enough, Illustrator didn't throw any error. 

Replacing font in there worked, though!

Thank you!