We Can Help
Why am I getting this error message, "populate_error:RangeError: Maximum call stack size exceeded"?
populate_error:RangeError: Maximum call stack size exceeded
This error usually occurs when you have a large number of entries in your Vault. Browser + LastPass cannot handle this load very well. This error often comes with a significant slow down in your browser. Unfortunately, the only 'solution' is to have less sites and less shared folders. We are currently limited by the browser and server technology so there is no fix we can produce at this time.
Aside from reducing the number of sites in the Vault, you can ask LastPass to stop downloading/syncing certain Shared Folders that you don't use as often as others. When you need them, you can redownload them. To stop downloading a folder, go Manage Shared Folders > Edit > click the gear icon in the top right > click 'Stop Downloading Folder'. The Shared Folder will disappear from your Vault. When you need it, go back to Manage Shared Folders to start downloading it again.