What the error means
A general error occurring when invoking an operation within the application.
It is most commonly related to inconsistent data in the cache or a connection issue.
Possible causes and solutions
1. Corrupted or outdated cache (most common)
The application is using invalid data (e.g. after an update).
Solution:
close the application
delete the contents of the cache folder
restart the application
2. Connection issue
This may be caused by:
a temporary outage
an unstable internet connection
a blockage (firewall)
Solution:
verify your connection
try repeating the operation
check your firewall settings if necessary