Hi, looks like there is a parsing problem reading the mgt.out file. Your quickest fix for now is to either:
1. Re-run but first uncheck the management output file. Under "Choose options to print" expand "Advanced options" on the right and uncheck the management output file box. Then re-run all steps.
2. Or, if you don't want to re-run, simply remove or rename the "mgt_out" table in your output database. From your project folder go to Scenarios/Default/Results and open swatplus_output.sqlite (more info about opening sqlite here if you need it:
https://swatplus.gitbook.io/docs/user/how-to-use-sqlite)
We'll have a patch for this soon! Just happened to catch at a tough time with the conference coming up next week, so it will be a little delayed.