ansky

Emily @cleanup, to have mixed case letters on Windows you need to set MySQL option:
lower_case_table_names=2, or maybe it is also your DB software is not allowing it.

To check the setting value you can run the query: SELECT @@lower_case_table_names;

But a simpler solution would just use lower case DB prefix in wp-config.php, just like umitdursoy said.

In my case, I already had lower_case_table_names=2, and solving the problem was as easy as renaming the problematic table from lowercase to the name with uppercase letters. (But I had to rename it to something else first)

This is happening because MySQL configured to convert table names to lower case.

I think Migration_Runner::run_migrations() uses prefix set in wp-config to check if migration table exists.

To solve the problem rename your migration table from ljf2yoast_migrations to LJf2yoast_migrations