It looks like the operation has taken longer than we expected. In the script, we default to 10 seconds for any given Perforce operation. If it takes longer, we would bail and return the error you are seeing.
There are a few legit reasons why an operation could take longer than 10 seconds, for example an offsite perforce server or simply a large number of changes with huge files are submitted.
We are looking at ways to improve the handling of a bad connection. In the meantime, you would have to open the Studio app package and modify the script file. There should be a Perforce.sc.js script in the scripts folder. You can look for the a line with timeout: 10000 and change that to timeout: 120000