Arduino and Appinventor both storing string in firebase but both cannot read each other's string

I have a project in which there is an exchange of information with Arduino, but I have a problem when I want to send information through firebase. Because AppInventor's string value when saving the string to the databae contains an escape sequence () and it is also not accepted when the returned string value does not have that. I have read the source code of the library in arduino and it does not cause the above problem.
I save the string by .Store block and it got the result like this
And Arduino save han't that escape sequence.
How do I get them to talk to each other?