Comment on the paper by Jalal et al. [Chaos, Solitons and Fractals 135 (2020) 109712].

In the paper by Jalal et al. [1], the authors present phase portraits of a differential system exhibiting chaotic behavior with line equilibria. This commentary identifies inaccuracies in the provided figures and offers corrected versions. Specifically, discrepancies were found in Fig. 1 (phase portraits with parameters a = 15 and b = 1) and Fig. 2 (phase portraits with parameters a = 0 and b = 5). Corrected figures, along with MATLAB codes for verification, are provided. These corrections are discussed in the context of chaotic systems with line equilibria, referencing Jafari and Sprott's work [2], which explores similar systems. [ABSTRACT FROM AUTHOR]