ASA upgrade to ASDM 7.12(1) - Error 400 when trying to connect

I am running into a bit of a trouble after upgrading my 5525-X cluster to ASDM 7.12(1) and ASA 9.4(4)32

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Update was done using ASDM. Checksum for the new ASDM file is OK on the ASA and #show version is showing the updated ASDM. Lasted java (JRE version 1.8.0_212) is installed on my PC.

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ASDM is giving me this error:

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Local Launcher Version = 1.8.0

Local Launcher Version Display = 1.8(0)

OK button clicked

Trying for ASDM Version file; url = https://my-ip/admin/

java.io.IOException: Server returned HTTP response code: 400 for URL: https://my-ip/admin/version.prop

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Unknown Source) at [sun.net.www.protocol.http.HttpURLConnection$10.run](https://sun.net.www.protocol.http.HttpURLConnection$10.run)(Unknown Source) at [sun.net.www.protocol.http.HttpURLConnection$10.run](https://sun.net.www.protocol.http.HttpURLConnection$10.run)(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at sun.net.www.protocol.http.HttpURLConnection.getChainedException(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.access$200(Unknown Source) at [sun.net.www.protocol.http.HttpURLConnection$9.run](https://sun.net.www.protocol.http.HttpURLConnection$9.run)(Unknown Source) at [sun.net.www.protocol.http.HttpURLConnection$9.run](https://sun.net.www.protocol.http.HttpURLConnection$9.run)(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessController.doPrivilegedWithCombiner(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) at com.cisco.launcher.y.if(Unknown Source) at com.cisco.launcher.r.a(Unknown Source) at [com.cisco.launcher.s.do](https://com.cisco.launcher.s.do)(Unknown Source) at com.cisco.launcher.s.null(Unknown Source) at [com.cisco.launcher.s.new](https://com.cisco.launcher.s.new)(Unknown Source) at com.cisco.launcher.s.access$000(Unknown Source) at com.cisco.launcher.s$2.a(Unknown Source) at [com.cisco.launcher.g$2.run](https://com.cisco.launcher.g$2.run)(Unknown Source) at [java.lang.Thread.run](https://java.lang.Thread.run)(Unknown Source) 

Caused by: java.io.IOException: Server returned HTTP response code: 400 for URL: https://my-ip/admin/version.prop

at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.access$200(Unknown Source) at [sun.net.www.protocol.http.HttpURLConnection$9.run](https://sun.net.www.protocol.http.HttpURLConnection$9.run)(Unknown Source) at [sun.net.www.protocol.http.HttpURLConnection$9.run](https://sun.net.www.protocol.http.HttpURLConnection$9.run)(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessController.doPrivilegedWithCombiner(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) at java.net.HttpURLConnection.getResponseCode(Unknown Source) at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source) at com.cisco.launcher.y.a(Unknown Source) ... 9 more 

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What should I do?