First, please make sure the your theme, plugins and wordpress are updated. See updated version list.. Then check this guide on how to update. I have tested it and seems working. First I download a sample svg from here: https://svgporn.com/. See this: https://screencast-o-matic.com/watch/cqj1iVOKS3
If the issue exists even after update, please try another svg file. Let’s see if that will work.
I confirmed theme, plugins, and Wordpress are all up-to-date.
Tested two files from svgporn.com and they both worked.
This means the formatting I’m saving the .svg files in from Illustrator is probably not correct.
I tried a few different options and was able to save the .svg from Illustrator with the correct formatting for Pro with these settings https://ibb.co/8x22fJ8