What is the burden of proving error at appeal?

" '[T]he most fundamental rule of appellate law is that the judgment challenged on appeal is presumed correct, and it is the appellant's burden to affirmatively demonstrate error.' [Citation.]" (Ruelas v. Superior Court (2015) 235 Cal.App.4th 374, 383, italics added; accord, In re Marriage

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of Arceneaux (1990) 51 Cal.3d 1130, 1133.) " 'To demonstrate error, appellant must present meaningful legal analysis supported by citations to authority and citations to facts in the record that support the claim of error. [Citations.]' [Citation.] 'Mere suggestions of error without supporting argument or authority other than general abstract principles do not properly present grounds for appellate review.' [Citation.] 'Hence, conclusory claims of error will fail.' [Citation.]" (Multani v. Within & Neal (2013) 215 Cal.App.4th 1428, 1457.)