Get image file content from file manager in BML and convert to base 64 format

Summary:

Get image file content from file manager in BML and convert to base 64 format

Content (please ensure you mask any confidential information):

I am trying to get content of image file stored in file manager and trying to convert in base 64 format.

Is there any way to achieve this use case?

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):

I am trying with below code snippet but it is not giving desired result :

myHeaders = dict("string");

put(myheaders, "Content-Type", "image/png");

resultStr = encodebase64(urldatabyget(FileManagerImageURLPlaceHolder,"","ERROR",5000,myHeaders));