Error while saving blame file

Hey all.
I updated an existing project from Unity 5.6.0 to 5.6.1 and a error I’ve never encountered appeared. I’ve looked around but couldn’t find anything about it. The consol text mentions Tools and AndroidSDK so I made sure to update everything from Android Studio but the issue is not fixed. SDK & JDK are setup correctly. I still can’t build (Nothing has changed except the update and the game has been working well for months).
If anyone could give me pointers on how to fix this, it’d be awesome.

Here is the consol text that appears :

Error: Error while saving blame file, build will continue

Error: Le préfixe “tools” de l’attribut “tools:overrideLibrary” associé à un type d’élément “uses-sdk” n’est pas lié

UnityEditor.HostView:OnGUI()

(The french part is weird since my whole system is in English, but it means :
Error: The “tools” prefix of the “Tools:overrideLibrary” associated with a type of element “uses-sdk”
is not linked).

Then an other error appears, but I think it is related to the first :

AndroidSDKToolsException: Unable to merge android manifests. See the Console for more details. 
UnityEditor.Android.AndroidSDKTools.DetectErrorsAndWarnings (System.String logMessages, System.String errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommandInternal (System.String javaExe, System.String sdkToolsDir, System.String[] sdkToolCommand, Int32 memoryMB, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommandSafe (System.String javaExe, System.String sdkToolsDir, System.String[] sdkToolCommand, Int32 memoryMB, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommand (System.String[] sdkToolCommand, Int32 memoryMB, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommand (System.String[] sdkToolCommand, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommand (System.String[] sdkToolCommand, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidSDKTools.MergeManifests (System.String target, System.String mainManifest, System.String[] libraryManifests, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit)
UnityEditor.Android.PostProcessor.Tasks.GenerateManifest.MergeManifests (UnityEditor.Android.PostProcessor.PostProcessorContext context, System.String targetManifest, System.String mainManifest)
UnityEditor.Android.PostProcessor.Tasks.GenerateManifest.Execute (UnityEditor.Android.PostProcessor.PostProcessorContext context)
UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context)
UnityEditor.HostView:OnGUI()

Thanks.

I added line xmlns:tools=“http://schemas.android.com/tools” into android manifest file (under package line), it’s fixed problem

Downgrading sdk-tools to v25.x helps to resolve this issue.

Yeah, but what if you want/need to use sdk-tools v25.x?

I was on the same Error while saving blame file, but since AndroidManifest.xml was an error, I deleted AndroidManifest.xml of Assets / Plugins / Android, I could create an apk.

Thanks, add tools works for me!!!

@NEBR thanks, add tools worked for me