Quando clico no botão Adicionar aparece tela de erro 500 com a seguinte mensagem!
Request processing failed; nested exception is java.lang.RuntimeException: java.sql.SQLException: Database lock acquisition failure: lockFile: org.hsqldb.persist.LockFile@be44884f[file =C:\Windows\System32\contas.db.lck, exists=false, locked=false, valid=false, ] method: openRAF reason: java.io.FileNotFoundException: C:\Windows\System32\contas.db.lck (Acesso negado)
