how to overcome from this error "The font 'XIWFFX+Helvetica-Bold' contains a bad /Bbox."

[shopkeepa28559279]

When I open a pdf file which is created in Adobe Acrobat DC i am getting "The font 'XIWFFX+Helvetica-Bold' contains a bad /Bbox." as warning message.

It would grateful if anyone can provide a resolution for this.

[Sleeplessbabs]

I just opened a PDF file and got a message that says "The font 'LucidaGrande' contains a bad /BBox." What does this mean and what needs to be done to fix this?