Security Reminder
Local does a pretty good job of scrubbing private info from the logs and the errors it produces, however there’s always the possibility that something private can come through. Because these are public forums, always review the screenshots you are sharing to make sure there isn’t private info like passwords being displayed.
Toggle your API access off/on in your WPE dashboard
Open Local back up
Log back into WPE and try to push again
After that if you still have trouble please share your full Local Log with us here. There are some different ways to access and share Local Logs. For us to be able to troubleshoot thoroughly, please click the Download Local Logs button from the Support tab in Local. This will generate a zip archive that contains the Local log along with some other diagnostic information to help quickly zero in on any issues that Local is encountering.
As a workaround, you can also use the WPE migration plugin to go from Local to WPE.
There might be a deeper issue within the site’s configuration. Since you are a WPE customer I would reach out to their support directly and let them know you aren’t able to migrate using the plugin. They should be able to help you migrate manually and then maybe can take a look at the site files to see if something is amiss.