Hello @Adalberto García Espinosa ,
Thanks for the question. Please use the Kudu console via (https://[sitename].scm.azurewebsites.net/DebugConsole) or through the Azure portal to look at your files and double-check their permissions. This time try using the 'attrib' command to verify the read/write attributes of your files. 'attrib' displays, sets, or removes the read-only, archive, system, and hidden attributes assigned to files or directories. Used without parameters, attrib displays attributes of all files in the current directory.
For example:
To display the attributes of a file named News86 that is located in the current directory, type:
attrib news86
To assign the Read-only attribute to the file named test.txt, type:
attrib +r test.txt
To remove the Read-only attribute to the file named test.txt, type:
attrib -r test.txt
Hope that helps. If you have further questions please let us know
Best,
Grace