Please How to use code fences.
The error is pretty explicit about where the errors are. Look at line 3 column 23 in casa.sitemap, line 4 column 31, line 5 column 31 and line 6, column 44 of casa.sitemap.
Because of the lack of code fences the formatting of the code has been munged up so it is all but impossible to tell why it has a problem with those characters. Though mismatched character ‘’ expecting ‘"’ implies that you may have copied and pasted from some other posting that didn’t use code fences. The forum replaces " witn smart quotes and smart quotes are not compatible with sitemaps, items, or rules files.