NullPointerException error

Megan is not finding any assignments.

There are two possible issues:

  1. there could be something wrong with the mapping db file.
    Could you please try opening it using the command line program sqlite3 like this:

sqlite3 megan-map-Feb2022-ue.db

and then type:

select * from info;
.quit

Does that work?

If it does, then the question is
(2) which database did you align against? Which mapping db file are you using (e.g. megan-map-Feb2022-ue.db?). If there is a mismatch between the database against which you aligned the sequences and the mapping db file that you are using, then this would explain why there are 0 assignments.

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