diff --git a/ChangeLog b/ChangeLog
index c74e3d15e0b7..289bda7d4810 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -14,6 +14,8 @@ phpMyAdmin - ChangeLog
 5.1.1 (not yet released)
 - issue #13325 Fixed created procedure shows up in triggers and events and vice-versa
 - issue        Fixed adding an event shows an empty row
+- issue #16706 Fixed a PHP error when visualizing a nullable geometry column
+- issue        Fixed a PHP type error when exporting triggers to ODF
 
 5.1.0 (2021-02-24)
 - issue #15350 Change Media (MIME) type references to Media type
diff --git a/libraries/classes/Gis/GisVisualization.php b/libraries/classes/Gis/GisVisualization.php
index 29c829d48a5a..0fc4f816e4af 100644
--- a/libraries/classes/Gis/GisVisualization.php
+++ b/libraries/classes/Gis/GisVisualization.php
@@ -28,6 +28,7 @@
 use function mb_substr;
 use function ob_get_clean;
 use function ob_start;
+use function is_string;
 
 /**
  * Handles visualization of GIS data
@@ -623,6 +624,9 @@ private function scaleDataSet(array $data)
         foreach ($data as $row) {
             // Figure out the data type
             $ref_data = $row[$this->settings['spatialColumn']];
+            if (! is_string($ref_data)) {
+                continue;
+            }
             $type_pos = mb_strpos($ref_data, '(');
             if ($type_pos === false) {
                 continue;
diff --git a/libraries/classes/Plugins/Export/ExportOdt.php b/libraries/classes/Plugins/Export/ExportOdt.php
index d7b151a7b4fa..aa87978b1cf5 100644
--- a/libraries/classes/Plugins/Export/ExportOdt.php
+++ b/libraries/classes/Plugins/Export/ExportOdt.php
@@ -725,7 +725,7 @@ public function exportStructure(
                 );
                 break;
             case 'triggers':
-                $triggers = $dbi->getTriggers($db, $table, $aliases);
+                $triggers = $dbi->getTriggers($db, $table);
                 if ($triggers) {
                     $GLOBALS['odt_buffer']
                     .= '<text:h text:outline-level="2" text:style-name="Heading_2"'
diff --git a/test/classes/Gis/GisVisualizationTest.php b/test/classes/Gis/GisVisualizationTest.php
index 1cdefc60fa04..67ad7a3e2fef 100644
--- a/test/classes/Gis/GisVisualizationTest.php
+++ b/test/classes/Gis/GisVisualizationTest.php
@@ -9,6 +9,76 @@
 
 class GisVisualizationTest extends AbstractTestCase
 {
+    /**
+     * Scale the data set
+     */
+    public function testScaleDataSet(): void
+    {
+        $gis = GisVisualization::getByData([], [
+            'mysqlVersion' => 50500,
+            'spatialColumn' => 'abc',
+            'isMariaDB' => false,
+        ]);
+        $this->callFunction(
+            $gis,
+            GisVisualization::class,
+            'handleOptions',
+            []
+        );
+        $dataSet = $this->callFunction(
+            $gis,
+            GisVisualization::class,
+            'scaleDataSet',
+            [
+                [
+                    ['abc' => null],// The column is nullable
+                    ['abc' => 2],// Some impossible test case
+                ],
+            ]
+        );
+        $this->assertSame(
+            [
+                'scale' => 1,
+                'x' => -15.0,
+                'y' => -210.0,
+                'minX' => 0.0,
+                'maxX' => 0.0,
+                'minY' => 0.0,
+                'maxY' => 0.0,
+                'height' => 450,
+            ],
+            $dataSet
+        );
+        $dataSet = $this->callFunction(
+            $gis,
+            GisVisualization::class,
+            'scaleDataSet',
+            [
+                [
+                    ['abc' => null],// The column is nullable
+                    ['abc' => 2],// Some impossible test case
+                    ['abc' => 'MULTILINESTRING((36 140,47 233,62 75),(36 100,17 233,178 93))'],
+                    ['abc' => 'POINT(100 250)'],
+                    ['abc' => 'MULTIPOINT(125 50,156 250,178 143,175 80)'],
+                ],
+            ]
+        );
+        $this->assertSame(
+            [
+                'scale' => 2.1,
+                'x' => -38.21428571428572,
+                'y' => 42.85714285714286,
+                'minX' => 17.0,
+                'maxX' => 178.0,
+                'minY' => 50.0 ,
+                'maxY' => 250.0,
+                'height' => 450,
+
+            ],
+            $dataSet
+        );
+    }
+
     /**
      * Modify the query for an old version
      */
diff --git a/test/classes/UtilTest.php b/test/classes/UtilTest.php
index ab725ba2287c..0909533a3ee8 100644
--- a/test/classes/UtilTest.php
+++ b/test/classes/UtilTest.php
@@ -2349,4 +2349,211 @@ public function testHandleDisableFKCheckCleanup(bool $fkChecksValue, string $set
 
         $GLOBALS['dbi'] = $oldDbi;
     }
+
+    public function testCurrentUserHasPrivilegeSkipGrantTables(): void
+    {
+        $dbi = $this->getMockBuilder(DatabaseInterface::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $dbi->expects($this->once())
+            ->method('getCurrentUserAndHost')
+            ->will($this->returnValue(['', '']));
+
+        $oldDbi = $GLOBALS['dbi'];
+        $GLOBALS['dbi'] = $dbi;
+        $this->assertTrue(Util::currentUserHasPrivilege('EVENT'));
+        $GLOBALS['dbi'] = $oldDbi;
+    }
+
+    public function testCurrentUserHasUserPrivilege(): void
+    {
+        $dbi = $this->getMockBuilder(DatabaseInterface::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $dbi->expects($this->once())
+            ->method('getCurrentUserAndHost')
+            ->will($this->returnValue(['groot_%', '%']));
+        $dbi->expects($this->once())
+            ->method('fetchValue')
+            ->with(
+                'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`USER_PRIVILEGES`'
+                . " WHERE GRANTEE='''groot_%''@''%''' AND PRIVILEGE_TYPE='EVENT'"
+            )
+            ->will($this->returnValue('EVENT'));
+
+        $oldDbi = $GLOBALS['dbi'];
+        $GLOBALS['dbi'] = $dbi;
+        $this->assertTrue(Util::currentUserHasPrivilege('EVENT'));
+        $GLOBALS['dbi'] = $oldDbi;
+    }
+
+    public function testCurrentUserHasNotUserPrivilege(): void
+    {
+        $dbi = $this->getMockBuilder(DatabaseInterface::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $dbi->expects($this->once())
+            ->method('getCurrentUserAndHost')
+            ->will($this->returnValue(['groot_%', '%']));
+        $dbi->expects($this->once())
+            ->method('fetchValue')
+            ->with(
+                'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`USER_PRIVILEGES`'
+                . " WHERE GRANTEE='''groot_%''@''%''' AND PRIVILEGE_TYPE='EVENT'"
+            )
+            ->will($this->returnValue(false));
+
+        $oldDbi = $GLOBALS['dbi'];
+        $GLOBALS['dbi'] = $dbi;
+        $this->assertFalse(Util::currentUserHasPrivilege('EVENT'));
+        $GLOBALS['dbi'] = $oldDbi;
+    }
+
+    public function testCurrentUserHasNotUserPrivilegeButDbPrivilege(): void
+    {
+        $dbi = $this->getMockBuilder(DatabaseInterface::class)
+            ->setMethods(['getCurrentUserAndHost', 'fetchValue'])
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        $dbi->expects($this->once())
+            ->method('getCurrentUserAndHost')
+            ->will($this->returnValue(['groot_%', '%']));
+        $dbi->expects($this->exactly(2))
+            ->method('fetchValue')
+            ->withConsecutive(
+                [
+                    'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`USER_PRIVILEGES`'
+                . " WHERE GRANTEE='''groot_%''@''%''' AND PRIVILEGE_TYPE='EVENT'",
+                ],
+                [
+                    'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`SCHEMA_PRIVILEGES`'
+                . " WHERE GRANTEE='''groot_%''@''%''' AND PRIVILEGE_TYPE='EVENT'"
+                . " AND 'my_data_base' LIKE `TABLE_SCHEMA`",
+                ]
+            )
+            ->willReturnOnConsecutiveCalls(
+                false,
+                'EVENT'
+            );
+
+        $oldDbi = $GLOBALS['dbi'];
+        $GLOBALS['dbi'] = $dbi;
+        $this->assertTrue(Util::currentUserHasPrivilege('EVENT', 'my_data_base'));
+        $GLOBALS['dbi'] = $oldDbi;
+    }
+
+    public function testCurrentUserHasNotUserPrivilegeAndNotDbPrivilege(): void
+    {
+        $dbi = $this->getMockBuilder(DatabaseInterface::class)
+            ->setMethods(['getCurrentUserAndHost', 'fetchValue'])
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        $dbi->expects($this->once())
+            ->method('getCurrentUserAndHost')
+            ->will($this->returnValue(['groot_%', '%']));
+        $dbi->expects($this->exactly(2))
+            ->method('fetchValue')
+            ->withConsecutive(
+                [
+                    'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`USER_PRIVILEGES`'
+                . " WHERE GRANTEE='''groot_%''@''%''' AND PRIVILEGE_TYPE='EVENT'",
+                ],
+                [
+                    'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`SCHEMA_PRIVILEGES`'
+                . " WHERE GRANTEE='''groot_%''@''%''' AND PRIVILEGE_TYPE='EVENT'"
+                . " AND 'my_data_base' LIKE `TABLE_SCHEMA`",
+                ]
+            )
+            ->willReturnOnConsecutiveCalls(
+                false,
+                false
+            );
+
+        $oldDbi = $GLOBALS['dbi'];
+        $GLOBALS['dbi'] = $dbi;
+        $this->assertFalse(Util::currentUserHasPrivilege('EVENT', 'my_data_base'));
+        $GLOBALS['dbi'] = $oldDbi;
+    }
+
+    public function testCurrentUserHasNotUserPrivilegeAndNotDbPrivilegeButTablePrivilege(): void
+    {
+        $dbi = $this->getMockBuilder(DatabaseInterface::class)
+            ->setMethods(['getCurrentUserAndHost', 'fetchValue'])
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        $dbi->expects($this->once())
+            ->method('getCurrentUserAndHost')
+            ->will($this->returnValue(['groot_%', '%']));
+        $dbi->expects($this->exactly(3))
+            ->method('fetchValue')
+            ->withConsecutive(
+                [
+                    'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`USER_PRIVILEGES`'
+                . " WHERE GRANTEE='''groot_%''@''%''' AND PRIVILEGE_TYPE='EVENT'",
+                ],
+                [
+                    'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`SCHEMA_PRIVILEGES`'
+                . " WHERE GRANTEE='''groot_%''@''%''' AND PRIVILEGE_TYPE='EVENT'"
+                . " AND 'my_data_base' LIKE `TABLE_SCHEMA`",
+                ],
+                [
+                    'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`TABLE_PRIVILEGES`'
+                . " WHERE GRANTEE='''groot_%''@''%''' AND PRIVILEGE_TYPE='EVENT'"
+                . " AND 'my_data_base' LIKE `TABLE_SCHEMA` AND TABLE_NAME='my\_data\_table'",
+                ]
+            )
+            ->willReturnOnConsecutiveCalls(
+                false,
+                false,
+                'EVENT'
+            );
+
+        $oldDbi = $GLOBALS['dbi'];
+        $GLOBALS['dbi'] = $dbi;
+        $this->assertTrue(Util::currentUserHasPrivilege('EVENT', 'my_data_base', 'my_data_table'));
+        $GLOBALS['dbi'] = $oldDbi;
+    }
+
+    public function testCurrentUserHasNotUserPrivilegeAndNotDbPrivilegeAndNotTablePrivilege(): void
+    {
+        $dbi = $this->getMockBuilder(DatabaseInterface::class)
+            ->setMethods(['getCurrentUserAndHost', 'fetchValue'])
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        $dbi->expects($this->once())
+            ->method('getCurrentUserAndHost')
+            ->will($this->returnValue(['groot_%', '%']));
+        $dbi->expects($this->exactly(3))
+            ->method('fetchValue')
+            ->withConsecutive(
+                [
+                    'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`USER_PRIVILEGES`'
+                . " WHERE GRANTEE='''groot_%''@''%''' AND PRIVILEGE_TYPE='EVENT'",
+                ],
+                [
+                    'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`SCHEMA_PRIVILEGES`'
+                . " WHERE GRANTEE='''groot_%''@''%''' AND PRIVILEGE_TYPE='EVENT'"
+                . " AND 'my_data_base' LIKE `TABLE_SCHEMA`",
+                ],
+                [
+                    'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.`TABLE_PRIVILEGES`'
+                . " WHERE GRANTEE='''groot_%''@''%''' AND PRIVILEGE_TYPE='EVENT'"
+                . " AND 'my_data_base' LIKE `TABLE_SCHEMA` AND TABLE_NAME='my\_data\_table'",
+                ]
+            )
+            ->willReturnOnConsecutiveCalls(
+                false,
+                false,
+                false
+            );
+
+        $oldDbi = $GLOBALS['dbi'];
+        $GLOBALS['dbi'] = $dbi;
+        $this->assertFalse(Util::currentUserHasPrivilege('EVENT', 'my_data_base', 'my_data_table'));
+        $GLOBALS['dbi'] = $oldDbi;
+    }
 }