Android studio: Error: Activity not started, unknown error code 5
<p>Currently developing an Android app for my company.</p>

<p>Everything was fine, till my last debugging session on my test-device (tablet attached to android via adb).
When I try to run or debug my app, the "Run App" log simply shows:</p>

<p><code>Error: Activity not started, unknown error code 5</code></p>

<p>There is no further information, no stack trace, no nothing...</p>

<p>I tried to figure out, what I changed since the last time, but nothing seems to fix this.</p>

<p>Has anybody else had this error code 5 before and can help me? </p>