Actions from windows to mac

Stephen is probably right. For example, if an action on Windows was recorded referencing a file found at an absolute path like…

C:\Users\[username]\Pictures\graphics

…that path must fail on a Mac for many reasons related to macOS using Unix-style paths instead, such as:

macOS doesn’t need drive letters, so a Mac path never starts with one. 

macOS paths don’t use the colon, in fact it’s an illegal character in paths. 

macOS uses forward slashes for directory hierarchies in paths, not backslashes.

The Mac version of that path would be

/Users/[username]/Pictures/graphics

To troubleshoot an action, inspect its steps in the Actions panel and find a step that looks down a path. You don’t need to re-record the entire action, you only need to re-record the step with the path problem and point it to where the same file is on your Mac now, then it should run properly.

It's probably a paltform specific absolute save or open path.

Please post a screenshot of the action panel expanded with all steps visible and the panel wide enough to view details for one of the actions that has this error.