In the original published version of this article, the ethical details were missing which has been added in the revised version. The original manuscript showed the ethical statement as: In practice, we have obtained ethical approval through research lab committee in faculty. This research project also contributes to the Financial Services Authority (Directorate of Fintech Regulation, Licensing and Supervision), the Ministry of Communication and Information Technology (Sub-Directorate of Electronic Certification Operations Control), the Investment Alert Task Force (SWI), and the Fintech Association in Indonesia (AFPI). The corrected version of the ethical statement can be found below: In practice, we have obtained ethical approval through Information Retrieval and Natural Language Processing Lab Faculty of Computer Science, University of Indonesia (Number: 02/PPM/EAL.X/2020) on 27th October 2020. The participants were informed about the purpose of the study and made sure that their participation was voluntary. This research project also contributes to the Financial Services Authority (Directorate of Fintech Regulation, Licensing and Supervision), the Ministry of Communication and Information Technology (Sub-Directorate of Electronic Certification Operations Control), the Investment Alert Task Force (SWI), and the Fintech Association in Indonesia (AFPI). The author apologizes for the errors. © 2021 The Author(s)