Erratum: Curvature inheritance symmetry on M-projectively flat spacetimes (International Journal of Geometric Methods in Modern Physics (2023) 20:2 (2350088) DOI: 10.1142/S0219887823500883)

After the publication of the paper [1], it came to the authors' note that the results proved for M-projectively flat perfect fluid spacetimes in Sec. 3 of the paper also hold for perfect fluid spacetimes in general. Therefore, the word "M-projectively flat" should be deleted from the heading and contents of Sec. 3. Also, the word "Mprojectively flat" is used in the 6th line of the abstract and in the last paragraph of Sec. 1 (Introduction) referring to the results of Sec. 3 should be deleted. The correct form of Eq. (26) is as follows: Ω;ijuiuj = Ω - −R 6 +∧− κ 2 (μ+ 3p) - = −Ω 3 [(2μ + 3p)κ−∧].