# Mercurial - push pretxnchangegroup.scm hook failed **URL:** \ **Category:** SCM-Manager Bug Reports\ **Created:** [July 27, 2023, 4:38pm UTC](https://community.cloudogu.com/t/mercurial-push-pretxnchangegroup-scm-hook-failed/1204 "2023-07-27T16:38:11Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![danielnovo](https://dub1.discourse-cdn.com/flex013/user_avatar/community.cloudogu.com/danielnovo/32/1756_2.png) [@danielnovo](https://community.cloudogu.com/u/danielnovo)\ **Post date:** [July 27, 2023, 4:38pm UTC](https://community.cloudogu.com/t/mercurial-push-pretxnchangegroup-scm-hook-failed/1204/1 "2023-07-27T16:38:11Z")
When i try to push a changeset to remote repository is failing with the following message: pretxnchangegroup.scm hook failed 2023-07-27 17:16:34.054 [HgHookWorker-1] [7ITlEB6O718] ERROR sonia.scm.repository.spi.HgHookChangesetProvider - could not retrieve changesets org.javahg.internals.RuntimeIOException: Input length = 1 at org.javahg.internals.Utils.asRuntime(Utils.java:438) at org.javahg.internals.Utils.decodeBytes(Utils.java:244) at org.javahg.internals.Utils.decodeBytes(Utils.java:224) at org.javahg.internals.HgInputStream.textUpTo(HgInputStream.java:430) Caused by: java.nio.charset.MalformedInputException: Input length = 1 at java.base/java.nio.charset.CoderResult.throwException(CoderResult.java:274) at java.base/java.nio.charset.CharsetDecoder.decode(CharsetDecoder.java:813) at org.javahg.internals.Utils.decodeBytes(Utils.java:242) … 37 common frames omitted 2023-07-27 17:16:34.079 [HgHookWorker-1] [7ITlEB6O718] WARN sonia.scm.repository.hooks.DefaultHookHandler - unknown error on hook occurred java.lang.NullPointerException: null at sonia.scm.repository.api.HgHookBranchProvider.changesets(HgHookBranchProvider.java:115) at sonia.scm.repository.api.HgHookBranchProvider.collect(HgHookBranchProvider.java:125) at sonia.scm.repository.api.HgHookBranchProvider.getDeletedOrClosed(HgHookBranchProvider.java:89) at sonia.scm.repository.DefaultBranchDeleteProtection.protectDefaultBranch(DefaultBranchDeleteProtection.java:57) Found this errors on logs. Not sure the reason. - SCM-Manager version and installed package: 2.45.2 Any tips on whats causing this issue? Thanks ---
**Author:** ![eheimbuch](https://dub1.discourse-cdn.com/flex013/user_avatar/community.cloudogu.com/eheimbuch/32/18_2.png) [@eheimbuch](https://community.cloudogu.com/u/eheimbuch)\ **Post date:** [July 28, 2023, 6:52am UTC](https://community.cloudogu.com/t/mercurial-push-pretxnchangegroup-scm-hook-failed/1204/2 "2023-07-28T06:52:28Z")
Does this only occur for one repository or each hg repo on your scm-server? Seems like your push doesn’t contain a branch? What exactly are you trying to push? ---
**Author:** ![danielnovo](https://dub1.discourse-cdn.com/flex013/user_avatar/community.cloudogu.com/danielnovo/32/1756_2.png) [@danielnovo](https://community.cloudogu.com/u/danielnovo)\ **Post date:** [July 28, 2023, 8:15am UTC](https://community.cloudogu.com/t/mercurial-push-pretxnchangegroup-scm-hook-failed/1204/3 "2023-07-28T08:15:09Z")
Hi Eduard, I’m trying to push some files to my repo. This is only happening on one of my repos. I clone this repo and try to push only one file and it works. I suspect this is being caused by one of the files. ---
**Author:** ![danielnovo](https://dub1.discourse-cdn.com/flex013/user_avatar/community.cloudogu.com/danielnovo/32/1756_2.png) [@danielnovo](https://community.cloudogu.com/u/danielnovo)\ **Post date:** [July 28, 2023, 8:37am UTC](https://community.cloudogu.com/t/mercurial-push-pretxnchangegroup-scm-hook-failed/1204/4 "2023-07-28T08:37:11Z")
Hi Eduard, After some tests i found the issue. I was trying to push a file with accent. Filename: “test cópia.xml” SCM Manager doesn’t support filenames with accent’s? ---
**Author:** ![eheimbuch](https://dub1.discourse-cdn.com/flex013/user_avatar/community.cloudogu.com/eheimbuch/32/18_2.png) [@eheimbuch](https://community.cloudogu.com/u/eheimbuch)\ **Post date:** [August 2, 2023, 11:01am UTC](https://community.cloudogu.com/t/mercurial-push-pretxnchangegroup-scm-hook-failed/1204/5 "2023-08-02T11:01:44Z")
Hey, sorry for the late response. Yes, this seems to be the cause. We have an similar issue on GitHub but could not fix it yet. > > > \## Issue description > While trying to migrate existing hg repo to scm, push fail…s on remote with "remote: pretxnchangegroup.scm hook failed". > Some repos works, some are rejected due to this issue. > I was able to push some failing hg repos using conversion to git and back to hg and then pushing to scm. > SCM-manager version is latest, and installation is both on Windows and on Linux, both are failing. > Mercurial from client side was 5.9.2 or 6.0.0. No SCM proxies are set. > > Log: > 2022-02-23 14:13:05.375 \[HgHookWorker-1\] \[6ASyGjI8F2w\] ERROR sonia.scm.repository.spi.HgHookChangesetProvider - could not retrieve changesets > org.javahg.internals.RuntimeIOException: Input length = 1 > at org.javahg.internals.Utils.asRuntime(Utils.java:438) > at org.javahg.internals.Utils.decodeBytes(Utils.java:244) > at org.javahg.internals.Utils.decodeBytes(Utils.java:224) > at org.javahg.internals.HgInputStream.textUpTo(HgInputStream.java:430) > at sonia.scm.repository.spi.javahg.AbstractChangesetCommand.createFromInputStream(AbstractChangesetCommand.java:246) > at sonia.scm.repository.spi.javahg.AbstractChangesetCommand.readListFromStream(AbstractChangesetCommand.java:164) > at sonia.scm.repository.spi.javahg.HgLogChangesetCommand.execute(HgLogChangesetCommand.java:65) > at sonia.scm.repository.spi.HgHookChangesetProvider.handleRequest(HgHookChangesetProvider.java:70) > at sonia.scm.repository.api.HgHookBranchProvider.changesets(HgHookBranchProvider.java:115) > at sonia.scm.repository.api.HgHookBranchProvider.collect(HgHookBranchProvider.java:125) > at sonia.scm.repository.api.HgHookBranchProvider.getDeletedOrClosed(HgHookBranchProvider.java:89) > at sonia.scm.repository.DefaultBranchDeleteProtection.protectDefaultBranch(DefaultBranchDeleteProtection.java:57) > at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.base/java.lang.reflect.Method.invoke(Method.java:566) > at com.github.legman.InvocationContext.invoke(InvocationContext.java:108) > at com.github.legman.InvocationContext.proceed(InvocationContext.java:101) > at com.github.legman.micrometer.MicrometerInvocationInterceptor.invoke(MicrometerInvocationInterceptor.java:47) > at com.github.legman.InvocationContext.proceed(InvocationContext.java:99) > at com.github.legman.EventHandler.handleEvent(EventHandler.java:103) > at com.github.legman.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:52) > at com.github.legman.EventBus.dispatchSynchronous(EventBus.java:452) > at com.github.legman.EventBus.dispatch(EventBus.java:446) > at com.github.legman.EventBus.dispatchSynchronousQueuedEvents(EventBus.java:421) > at com.github.legman.EventBus.post(EventBus.java:333) > at sonia.scm.event.LegmanScmEventBus.post(LegmanScmEventBus.java:92) > at sonia.scm.repository.AbstractRepositoryManager.fireHookEvent(AbstractRepositoryManager.java:57) > at sonia.scm.repository.spi.HookEventFacade$HookEventHandler.fireHookEvent(HookEventFacade.java:137) > at sonia.scm.repository.hooks.DefaultHookHandler.fireHook(DefaultHookHandler.java:119) > at sonia.scm.repository.hooks.DefaultHookHandler.handleHookRequest(DefaultHookHandler.java:105) > at sonia.scm.repository.hooks.DefaultHookHandler.handleHookRequest(DefaultHookHandler.java:90) > at sonia.scm.repository.hooks.DefaultHookHandler.run(DefaultHookHandler.java:77) > at sonia.scm.repository.hooks.HookServer.lambda$associateSecurityManager$1(HookServer.java:103) > at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) > at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) > at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) > at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) > at java.base/java.lang.Thread.run(Thread.java:829) > Caused by: java.nio.charset.MalformedInputException: Input length = 1 > at java.base/java.nio.charset.CoderResult.throwException(CoderResult.java:274) > at java.base/java.nio.charset.CharsetDecoder.decode(CharsetDecoder.java:813) > at org.javahg.internals.Utils.decodeBytes(Utils.java:242) > ... 37 common frames omitted > 2022-02-23 14:13:05.403 \[HgHookWorker-1\] \[6ASyGjI8F2w\] WARN sonia.scm.repository.hooks.DefaultHookHandler - unknown error on hook occurred > java.lang.NullPointerException: null > at sonia.scm.repository.api.HgHookBranchProvider.changesets(HgHookBranchProvider.java:115) > at sonia.scm.repository.api.HgHookBranchProvider.collect(HgHookBranchProvider.java:125) > at sonia.scm.repository.api.HgHookBranchProvider.getDeletedOrClosed(HgHookBranchProvider.java:89) > at sonia.scm.repository.DefaultBranchDeleteProtection.protectDefaultBranch(DefaultBranchDeleteProtection.java:57) > at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.base/java.lang.reflect.Method.invoke(Method.java:566) > at com.github.legman.InvocationContext.invoke(InvocationContext.java:108) > at com.github.legman.InvocationContext.proceed(InvocationContext.java:101) > at com.github.legman.micrometer.MicrometerInvocationInterceptor.invoke(MicrometerInvocationInterceptor.java:47) > at com.github.legman.InvocationContext.proceed(InvocationContext.java:99) > at com.github.legman.EventHandler.handleEvent(EventHandler.java:103) > at com.github.legman.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:52) > at com.github.legman.EventBus.dispatchSynchronous(EventBus.java:452) > at com.github.legman.EventBus.dispatch(EventBus.java:446) > at com.github.legman.EventBus.dispatchSynchronousQueuedEvents(EventBus.java:421) > at com.github.legman.EventBus.post(EventBus.java:333) > at sonia.scm.event.LegmanScmEventBus.post(LegmanScmEventBus.java:92) > at sonia.scm.repository.AbstractRepositoryManager.fireHookEvent(AbstractRepositoryManager.java:57) > at sonia.scm.repository.spi.HookEventFacade$HookEventHandler.fireHookEvent(HookEventFacade.java:137) > at sonia.scm.repository.hooks.DefaultHookHandler.fireHook(DefaultHookHandler.java:119) > at sonia.scm.repository.hooks.DefaultHookHandler.handleHookRequest(DefaultHookHandler.java:105) > at sonia.scm.repository.hooks.DefaultHookHandler.handleHookRequest(DefaultHookHandler.java:90) > at sonia.scm.repository.hooks.DefaultHookHandler.run(DefaultHookHandler.java:77) > at sonia.scm.repository.hooks.HookServer.lambda$associateSecurityManager$1(HookServer.java:103) > at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) > at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) > at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) > at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) > at java.base/java.lang.Thread.run(Thread.java:829) > > Thanks for help. Petr ---
**Author:** ![eheimbuch](https://dub1.discourse-cdn.com/flex013/user_avatar/community.cloudogu.com/eheimbuch/32/18_2.png) [@eheimbuch](https://community.cloudogu.com/u/eheimbuch)\ **Post date:** [August 2, 2023, 11:06am UTC](https://community.cloudogu.com/t/mercurial-push-pretxnchangegroup-scm-hook-failed/1204/6 "2023-08-02T11:06:17Z")
Here some further information regarding that topic: [EncodingStrategy - Mercurial](https://wiki.mercurial-scm.org/EncodingStrategy)