Article ID: 115524, created on Feb 11, 2013, last review on Jun 17, 2016

  • Applies to:
  • Plesk 12.0 for Linux
  • Plesk 11.0 for Linux
  • Plesk 11.5 for Linux


Migration fails with an error message:

pmm utility 'migration_handler' raised an exception. Error code is: 1
See pmmcli.log to find out detailed information on this


This error is usually caused by backup failure on the source server.


To troubleshoot the issue, use the following steps:

  1. Upload the proper migration agent and its modules to the source server. For example, if you are transferring data from a Parallels Plesk server, you need to upload these files:


    Use the following command to copy the agent and its modules to the source server:

    destination ~# scp -r /usr/local/psa/PMM/agents/shared/* /usr/local/psa/PMM/agents/PleskX/* root@source:/temporary_migration_directory/
  2. Log in to the source server and go to the /temporary_migration_directory. Then, run:

    temporary_migration_directory ~# chmod 755
    temporary_migration_directory ~# ./ -da -co -vvvvvv >> migration.log 2>&1

You will then be able to find a more detailed error message in /temporary_migration_directory/migration.log

Check if this detailed error message matches any of the following behaviors and, if it does, follow the instructions in the corresponding articles:

115111 Migration fails with "CRITICAL PMMUtility" exception

6349 Migration fails with error: "subproc.NonzeroExitException was finished with exit code 2"

112964 Migration fails with error "Logging::error('Unable to create dump', 'fatal') called at ./"

115523 Migration fails: "Unable to create dump: 'undef' value passed to XmlNode::setAttribute for 'guid' at"

126316 Cannot perform migration: not well-formed (invalid token)

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Migration fails

Error: pmm utility 'Conflict Resolver' raised an exception. Error code is: 1 See pmmcli.log to find out detailed information on this

0a53c5a9ca65a74d37ef5c5eaeb55d7f 56797cefb1efc9130f7c48a7d1db0f0c a914db3fdc7a53ddcfd1b2db8f5a1b9c 29d1e90fd304f01e6420fbe60f66f838 aea4cd7bfd353ad7a1341a257ad4724a 01bc4c8cf5b7f01f815a7ada004154a2 2a5151f57629129e26ff206d171fbb5f e335d9adf7edffca6a8af8039031a4c7

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