[Koha] Error message shown during web installation

[Indranil Baruah]

Following error is shown during web installation of Koha 19.05 on Lubuntu
19.04. The installation however completes but the speed of the application
is slow even with Memcached running.
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Mandatory data added

    subtag_registry.sql
    auth_val_cat.sql
    message_transport_types.sql
    sample_notices_message_attributes.sql
    sample_notices_message_transports.sql
    auth_values.sql
   * authorities_normal_marc21.sql*

*    [Fri Jun 14 19:07:09 2019] install.pl <http://install.pl>:
DBD::mysql::st execute failed: Incorrect integer value: '' for column
'linkid' at row 148 at /usr/share/perl5/DBIx/RunSQL.pm line 278,
<$args{...}> chunk 1.*

    class_sources.sql
    marc21_framework_DEFAULT.sql
    sample_frequencies.sql
    sample_notices.sql
    sample_numberpatterns.sql
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