The URI Too Long error occurs when a user tries to sync.
This is a rare error that occurs when something goes wrong with the user's hard drive. Pulsar uses an encrypted SQLite database to store the user's data on the device and when the hard disk malfunctions, the application cannot access the database and prints the URI Too Long error.
Here is a blog post that we think is helpful to understand what could cause this problem: SQLite Database Disk Image Is Malformed.
Another reason for the error is the failure in disk drive/ flash memory. It can affect the content of the file and result in corruption. Moreover, in such a situation, it becomes tough to resolve this issue.