Cannot process with bootloader and Ubuntu Touch upgrade in dualboot mode

sermountain

Hello,
When trying to upgrade I got the error:

Downloading boot0…
Done
Downloading boot1…
Done
Downloading _install.sh…
(Connecting…)
--- Failure ---
Details for developers:
java.lang.IllegalArgumentException: Expected URL scheme 'http' or 'https' but no scheme was found for install…
    at okhttp3.HttpUrl$Builder.parse$okhttp(HttpUrl.kt:1261)
    at okhttp3.HttpUrl$Companion.get(HttpUrl.kt:1634)
    at okhttp3.Request$Builder.url(Request.kt:184)
    at org.andbootmgr.app.util.AbmOkHttp$run$2.invokeSuspend(AbmOkHttp.kt:42)
    at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
    at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104)
    at kotlinx.coroutines.internal.LimitedDispatcher$Worker.run(LimitedDispatcher.kt:111)
    at kotlinx.coroutines.scheduling.TaskImpl.run(Tasks.kt:99)
    at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:584)
    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:811)
    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:715)
    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:702)```

Downloading _install.sh…
Done
Flashing DroidBoot…
Note: probably cannot write to bootloader
--- Failure ---
Details for developers:
java.io.FileNotFoundException: /dev/block/by-name/lk: open failed: ENOENT (No such file or directory)
at libcore.io.IoBridge.open(IoBridge.java:574)
at java.io.FileInputStream.<init>(FileInputStream.java:179)
at com.topjohnwu.superuser.io.SuFileInputStream.open(SuFileInputStream.java:59)
at com.topjohnwu.superuser.io.SuFileInputStream.open(SuFileInputStream.java:42)
at org.andbootmgr.app.UpdateDroidBootFlowKt$Flash$1.invokeSuspend(UpdateDroidBootFlow.kt:71)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104)
at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:584)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:811)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:715)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:702)
Caused by: android.system.ErrnoException: open failed: ENOENT (No such file or directory)
at libcore.io.Linux.open(Native Method)
at libcore.io.ForwardingOs.open(ForwardingOs.java:563)
at libcore.io.BlockGuardOs.open(BlockGuardOs.java:274)
at libcore.io.ForwardingOs.open(ForwardingOs.java:563)
at android.app.ActivityThread$AndroidOs.open(ActivityThread.java:8820)
at libcore.io.IoBridge.open(IoBridge.java:560)

sermountain

I have Volla X23 with Android 15.0, latest OS upgrade is installed