Error migrate From redmine

[Andrii Kopytsia]

I have next error

Unexpected failure occurred. Importer will stop immediately. Data may be in an unstable state

ERROR - Cannot fetch issue id=44244
com.taskadapter.redmineapi.RedmineFormatException: org.json.JSONException: A JSONObject text must begin with '{' at character 1
	at com.taskadapter.redmineapi.internal.Transport.parseResponse(Transport.java:529)
	at com.taskadapter.redmineapi.internal.Transport.getObject(Transport.java:312)
	at com.taskadapter.redmineapi.internal.Transport.getObject(Transport.java:371)
	at com.taskadapter.redmineapi.RedmineManager.getIssueById(RedmineManager.java:236)

2015-03-26 10:02:26,468 ERROR - Unexpected failure occurred. Importer will stop immediately. Data may be in an unstable state
com.atlassian.jira.plugins.importer.redmine.RedmineRemoteException: Cannot fetch issue id=44244
	at com.atlassian.jira.plugins.importer.redmine.RedmineClient.translateException(RedmineClient.java:445)
	at com.atlassian.jira.plugins.importer.redmine.RedmineClient.access$200(RedmineClient.java:77)
	at com.atlassian.jira.plugins.importer.redmine.RedmineClient$6$1.apply(RedmineClient.java:172)
	at com.atlassian.jira.plugins.importer.redmine.RedmineClient$6$1.apply(RedmineClient.java:166)
	at com.google.common.collect.Iterators$8.next(Iterators.java:812)
	at com.google.common.collect.Iterators$8.next(Iterators.java:811)

[Deepa Pawar]

I was facing similar issue, and found that the issue id mentioned in the error was not accessible from Redmine itself. It was using Unicode characters which were not readable. Resolved this issue by correcting the description which was in incorrect format as well as journals associated (since history is maintained for changes).

Starting import process again resolved this issue after making sure that issue id is accessible from Redmine as well.

[Deepa Pawar]

@Andrey Kopitsa - Did you get details for this error ?

I am getting this error for My Redmine to JIRA import . Is this because of some limit set up on JIRA or Redmine? How did you resolve this error ?