<verbatim>
Error: (cadr) bad argument type: ()

        Call history:

        tasks.scm:67: sqlite3#make-busy-timeout
        tasks.scm:71: sqlite3#set-busy-handler!
        tasks.scm:72: conc
        tasks.scm:72: sqlite3#execute
        tasks.scm:75: file-read-access?
        dashboard.scm:1457: sqlite3#finalize!
        dashboard.scm:1508: get-environment-variable
        dashboard.scm:1508: conc
        dashboard.scm:1509: file-exists?
        dashboard.scm:1513: args:get-arg
        margs.scm:17: hash-table-ref/default
        dashboard.scm:1524: args:get-arg
        margs.scm:17: hash-table-ref/default
        dashboard.scm:1525: args:get-arg
        margs.scm:17: hash-table-ref/default
        dashboard.scm:1525: string-split
</verbatim>