Does exp sign an apk generated with a custom keystore ?

I’ve generated an apk using my own keystore. I then tried to upload it to the Play Store but i’m getting the error

You uploaded an APK with an invalid signature (learn more about signing). Error from apksigner: ERROR: JAR_SIG_NO_SIGNATURES: No JAR signatures

My apk’s name finishes by signed.apk though, is that name relevant in this case ?
I then tried the same using a keystore created by Expo and no errors this time.

I’m confused.

Anyone ?

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