Hello France-
Thanks for reaching out, and thanks for using the Inspirations WordPress website builder.
This error happens when something went wrong during the original installation of the BoldGrid plugins, when the shared libraries are installed. I haven’t seen this error occur with the most recent versions of the plugins, so be sure that all of your plugins are up-to-date.
Once you’re up-to-date, disable all of the BoldGrid plugins, delete Inspirations, and re-install Inspirations fresh. You can download the newest version of Inspirations from this link.
Once you’ve done that, re-enable the rest of the plugins and everything should be working correctly once again.