Switching to remi breaks mvc/yii app on a Centos7 server

I switched over to remi 5.6 from Centos php 5.4 on a centos7 server. Everything worked perfectly before the change over so it would not seem to make sense that there is a code error. I got everything working but an mvc/yii app which is having trouble.
I believe I fixed this once on another server simply by adding a missing package. However, which, I cannot recall at this point.
If memory serves, it was related to the php-mysql package which I replaced with php-mysqlnd since the php-mysql package is deprecated with 5.6.

PDOException: SQLSTATE[HY000]
General error: 2014 Cannot execute queries while other unbuffered queries are active.  Consider using PDOStatement::fetchAll().
Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the
PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute. (uncaught exception) at /var/www/vhosts/myapp/client_php/src/Service/ClientService.php line 51 {"exception":"[object]

PDOException(code: HY000): SQLSTATE[HY000]
General error: 2014 Cannot execute queries while other unbuffered queries are active.  Consider using PDOStatement::fetchAll().
Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute. at
/var/www/vhosts/myapp/client_php/src/Service/ClientService.php:51)"} []

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# yum list installed | grep "remi"
gd-last.x86_64                        2.2.3-1.el7.remi               @remi
libzip-last.x86_64                    1.1.3-1.el7.remi               @remi
memcached.x86_64                      1.4.29-1.el7.remi              @remi
php.x86_64                            5.6.24-1.el7.remi              @remi-php56
php-bcmath.x86_64                     5.6.24-1.el7.remi              @remi-php56
php-cli.x86_64                        5.6.24-1.el7.remi              @remi-php56
php-common.x86_64                     5.6.24-1.el7.remi              @remi-php56
php-devel.x86_64                      5.6.24-1.el7.remi              @remi-php56
php-gd.x86_64                         5.6.24-1.el7.remi              @remi-php56
php-gmp.x86_64                        5.6.24-1.el7.remi              @remi-php56
php-intl.x86_64                       5.6.24-1.el7.remi              @remi-php56
php-mbstring.x86_64                   5.6.24-1.el7.remi              @remi-php56
php-mysqlnd.x86_64                    5.6.24-1.el7.remi              @remi-php56
php-opcache.x86_64                    5.6.24-1.el7.remi              @remi-php56
php-pdo.x86_64                        5.6.24-1.el7.remi              @remi-php56
php-pear.noarch                       1:1.10.1-5.el7.remi            @remi
php-pecl-apcu.x86_64                  4.0.11-2.el7.remi.5.6          @remi-php56
php-pecl-jsonc.x86_64                 1.3.10-1.el7.remi.5.6          @remi-php56
php-pecl-jsonc-devel.x86_64           1.3.10-1.el7.remi.5.6          @remi-php56
php-pecl-memcache.x86_64              3.0.8-4.el7.remi.5.6           @remi-php56
php-pecl-zip.x86_64                   1.13.4-1.el7.remi.5.6          @remi-php56
php-php-gettext.noarch                1.0.11-12.el7.remi             @remi
php-phpseclib.noarch                  2.0.2-1.el7.remi               @remi
php-process.x86_64                    5.6.24-1.el7.remi              @remi-php56
php-recode.x86_64                     5.6.24-1.el7.remi              @remi-php56
php-symfony-class-loader.noarch       2.8.8-1.el7.remi               @remi
php-symfony-common.noarch             2.8.8-1.el7.remi               @remi
php-tcpdf.noarch                      6.2.12-1.el7.remi              @remi
php-tcpdf-dejavu-sans-fonts.noarch    6.2.12-1.el7.remi              @remi
php-tidy.x86_64                       5.6.24-1.el7.remi              @remi-php56
php-xml.x86_64                        5.6.24-1.el7.remi              @remi-php56
remi-release.noarch                   7.2-1.el7.remi                 @remi

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