Server errors (1 reply)

Windows10-64bit
version-3.0.6
apache-2.4.27
php-7.1.9
mysql-5.7.19
icon-green
127.0.0.1 localhost ::1 localhost
localhost-yes
8a-no
9-yes
11-Avira
c:/wamp64

I created a table with the following structure
varchar(8) PK
char(30)
varchar(50)
char(9)
varchar(50)
date

and got the following server errors

Warning in .\libraries\controllers\table\TableStructureController.php#1309
Illegal string offset 'Data_length'

Backtrace

.\libraries\controllers\table\TableStructureController.php#1265: PMA\libraries\controllers\table\TableStructureController->getTableStats()
.\libraries\controllers\table\TableStructureController.php#355: PMA\libraries\controllers\table\TableStructureController->displayStructure(
array,
array,
array,
,
array,
array,
)
.\tbl_structure.php#47: PMA\libraries\controllers\table\TableStructureController->indexAction()
Warning in .\libraries\controllers\table\TableStructureController.php#1312
Illegal string offset 'Index_length'

Backtrace

.\libraries\controllers\table\TableStructureController.php#1265: PMA\libraries\controllers\table\TableStructureController->getTableStats()
.\libraries\controllers\table\TableStructureController.php#355: PMA\libraries\controllers\table\TableStructureController->displayStructure(
array,
array,
array,
,
array,
array,
)
.\tbl_structure.php#47: PMA\libraries\controllers\table\TableStructureController->indexAction()
Warning in .\libraries\controllers\table\TableStructureController.php#1324
Illegal string offset 'Data_length'

Backtrace

.\libraries\controllers\table\TableStructureController.php#1265: PMA\libraries\controllers\table\TableStructureController->getTableStats()
.\libraries\controllers\table\TableStructureController.php#355: PMA\libraries\controllers\table\TableStructureController->displayStructure(
array,
array,
array,
,
array,
array,
)
.\tbl_structure.php#47: PMA\libraries\controllers\table\TableStructureController->indexAction()
Warning in .\libraries\controllers\table\TableStructureController.php#1328
Illegal string offset 'Index_length'

Backtrace

.\libraries\controllers\table\TableStructureController.php#1265: PMA\libraries\controllers\table\TableStructureController->getTableStats()
.\libraries\controllers\table\TableStructureController.php#355: PMA\libraries\controllers\table\TableStructureController->displayStructure(
array,
array,
array,
,
array,
array,
)
.\tbl_structure.php#47: PMA\libraries\controllers\table\TableStructureController->indexAction()
Warning in .\libraries\controllers\table\TableStructureController.php#1346
Illegal string offset 'Data_length'

Backtrace

.\libraries\controllers\table\TableStructureController.php#1265: PMA\libraries\controllers\table\TableStructureController->getTableStats()
.\libraries\controllers\table\TableStructureController.php#355: PMA\libraries\controllers\table\TableStructureController->displayStructure(
array,
array,
array,
,
array,
array,
)
.\tbl_structure.php#47: PMA\libraries\controllers\table\TableStructureController->indexAction()
Warning in .\libraries\controllers\table\TableStructureController.php#1347
Illegal string offset 'Index_length'

Backtrace

.\libraries\controllers\table\TableStructureController.php#1265: PMA\libraries\controllers\table\TableStructureController->getTableStats()
.\libraries\controllers\table\TableStructureController.php#355: PMA\libraries\controllers\table\TableStructureController->displayStructure(
array,
array,
array,
,
array,
array,
)
.\tbl_structure.php#47: PMA\libraries\controllers\table\TableStructureController->indexAction()
Warning in .\libraries\controllers\table\TableStructureController.php#1352
Illegal string offset 'Data_length'

Backtrace

.\libraries\controllers\table\TableStructureController.php#1265: PMA\libraries\controllers\table\TableStructureController->getTableStats()
.\libraries\controllers\table\TableStructureController.php#355: PMA\libraries\controllers\table\TableStructureController->displayStructure(
array,
array,
array,
,
array,
array,
)
.\tbl_structure.php#47: PMA\libraries\controllers\table\TableStructureController->indexAction()
Warning in .\libraries\controllers\table\TableStructureController.php#1352
Illegal string offset 'Index_length'

Backtrace

.\libraries\controllers\table\TableStructureController.php#1265: PMA\libraries\controllers\table\TableStructureController->getTableStats()
.\libraries\controllers\table\TableStructureController.php#355: PMA\libraries\controllers\table\TableStructureController->displayStructure(
array,
array,
array,
,
array,
array,
)
.\tbl_structure.php#47: PMA\libraries\controllers\table\TableStructureController->indexAction()
Warning in .\templates\table\structure\display_table_stats.phtml#4
Illegal string offset 'TABLE_COMMENT'

Backtrace

.\libraries\Template.php#152: include(.\templates\table\structure\display_table_stats.phtml)
.\libraries\controllers\table\TableStructureController.php#1389: PMA\libraries\Template->render(array)
.\libraries\controllers\table\TableStructureController.php#1265: PMA\libraries\controllers\table\TableStructureController->getTableStats()
.\libraries\controllers\table\TableStructureController.php#355: PMA\libraries\controllers\table\TableStructureController->displayStructure(
array,
array,
array,
,
array,
array,
)
.\tbl_structure.php#47: PMA\libraries\controllers\table\TableStructureController->indexAction()
Warning in .\templates\table\structure\display_table_stats.phtml#6
Illegal string offset 'TABLE_COMMENT'

Backtrace

.\libraries\Template.php#152: include(.\templates\table\structure\display_table_stats.phtml)
.\libraries\controllers\table\TableStructureController.php#1389: PMA\libraries\Template->render(array)
.\libraries\controllers\table\TableStructureController.php#1265: PMA\libraries\controllers\table\TableStructureController->getTableStats()
.\libraries\controllers\table\TableStructureController.php#355: PMA\libraries\controllers\table\TableStructureController->displayStructure(
array,
array,
array,
,
array,
array,
)
.\tbl_structure.php#47: PMA\libraries\controllers\table\TableStructureController->indexAction()

Any idea what might be causing this?