Import terms issue

Feb 6 at 7:00 PM

Our sharepoint server's version is 2016 lying on windows server 2016.

Using the SPTaxonomyToolsonline we have encountered the following issue :
Even if the export terms works fine , while we are trying to execute <Import terms> we are getting the following error :
1/3: *** ERROR searching for term matches: Microsoft.SharePoint.Client.ServerException: The value '913bdc5c-2266-4d77-8563-7bffd0ba4ebf|aaa' is invalid. It probably contains invalid characters or is too long.
Parameter name: termLabel
at Microsoft.SharePoint.Client.ClientRequest.ProcessResponseStream(Stream responseStream)
at Microsoft.SharePoint.Client.ClientRequest.ProcessResponse()
at SPTaxonomyToolsOnline.Form1.ImportTermsSimple()

we were trying to import the following xls lines:

Any ideas

Thanks in advance

George Thanos