I have resolve the following issue:
-- Indexes for table `discussion_languages`
--
ALTER TABLE `discussion_languages`
ADD PRIMARY KEY (`id`),
ADD UNIQUE KEY `discussion_languages_code_unique` (`code`)
MySQL said: Documentation
#1071 - Specified key was too long; max key length is 1000 bytes
The screenshot after I upload the database
The screenshot after I made changes to the database
I am not sure the same situation happens to others. However, I guess it's good to make a notes, just in case, this will be helpful to someone else in the future. Cheers!