[Koha] Getting error after migrating data from Koha 3.10 to 16.11

[Zeno Tajoli]

Hi,

>We are getting some problem while migration of Koha 3.10.04.000
>to 16.11.07.000.
>
>But when I am trying to login using superadmin (Koha_library), each time I
>am getting following error in *Staff client. *>

>*Error: You do not have permission to access this page.*
>But after just refreshing staff clients login page, I am able to
>login successfully.
>And logs of intranet-error.log will get following lines.
>
>[Sun May 14 11:49:24.256127 2017] [cgi:error] [pid 12639] [client
>10.1.1.4:2745] AH01215: [Sun May 14 11:49:24 2017] mainpage.pl: Use of
>uninitialized value in string eq at
/>usr/share/koha/lib/Koha/Template/Plugin/Branches.pm line 68.:
>/usr/share/koha/intranet/cgi-bin/mainpage.pl, referer:
>http://10.1.1.28:8080/
>
>*Koha 3.10's Superadmin's default username was "Kohaadmin". And Koha
>16.11's default username is "Koha_library". is this creates problem*?

You need to check (also at SQL level) those system preferences:
OPACNumbersPreferPhrase
IntranetNumbersPreferPhrase
UNIMARCAuthorityField100

Check those tables (SQL, schema, indexes, data inside, ect):
import_records
biblioitems

This a point to check:
upgrade to 3.19.00.027 done 
(Bug 4222: Nonpublic note not appearing in the staff client) <b>Please check each of your
frameworks to ensure your non-public item notes are mapped to items.itemnotes_nonpublic.
After doing so please have your administrator run misc/batchRebuildItemsTables.pl </b>)

Read the comments about the bug:
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=4222

But your problem is not connect with those checks (that you must to do).
Your problem is this:
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=18442
Read the comments to understood the problem.
You can try to apply the patch yourself or wait for 16.11.8

Bye
Zeno Tajoli