Failed to execute dex: multiple dex files define
1 answer
Are you using an Android library (another library project) that has a .jar library just like the .jar in your project, but with different sha1s (or different sizes)?
if doing so try to use only one of the duplicated library and then clean and rebuild.
also check this question, might be helpful Unable to execute dex: multiple dex files define an array Lcom / myapp / R $,
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