Correction to: Robomech J (2021) 8:1 https://doi.org/10.1186/s40648-020-00188-9

Following publication of the original article [1], the authors reported an error occured during the production process in affiliation and dagger symbol that is listed in the footnote of page 5 of the document (A2) should be added as a superscript.

The original article [1] has been updated.