Go to Reports | Report Wizard. Select any report and click on the Generate button, and you will get a 'General Error' message.
This happens in Stat 6.2 HF-f, with SCA configured over HTTPS.
Even changing the REST parameters below through Maintenance | General | System Maintenance | Parameters tab, the error remains:
- 'REST calls timeout in seconds' = 180
- 'Protocol for Rest HTTPS' = 4