Can't export my database from mysql workbench

In MySql Workbench version 8.0.13 do the following steps:

1. Go to Management/Data export
2. Choose the schema to export in the 'Tables to export' list
3. Click the 'Advanced Options...' button (top right)
4. Search for the option 'Other/column-statistics'
5. Set the value to 0
6. Click the 'Return' button (top right)

Now it should work. Unfortunately, you'll have to do that every time you start MySql Workbench.

Also ran into this problem. Decided as follows: In the Workbench menu, go to:

Edit - Preferences - Administration

In the field "Path to mysqldump Tool", prescribe the path to mysqldump.exe, in my case "C:\Program Files\MySQL\MySQL Server 5.7\bin\mysqldump.exe", click OK.

After that, the error no longer appeared.

It is due to a flag that is by default "enabled" in mysqldump 8.

That can be disabled by adding --column-statistics=0.

Syntax :

mysqldump --column-statistics=0 --host=<server> --user <user> --password <securepass> 

For more info please go to link

To disable column statistics by default, you can add

[mysqldump]
column-statistics=0

to a MySQL config file, such as /etc/my.cnf or ~/.my.cnf.