On BitBucket I get empty commits while I commited them not empty.

When I change file on my PC - git shows me that file is modified. I commit it and push.
Then look the last commit at BitBucket and it shows 0 changes.

But when I check raw code - I can see that changes are made.

For example: https://bitbucket.org/serditov/expert_01/commits/ea9b8a5e7c20d5361809c044d0d3bde138d92647