Strange black lines and smudged borders.

Just developed a roll of Ilford HP5 pushed +2 stops to 1600. After developing, I realized these strange lines and smudges on frame borders. Anyone has encountered this before and if so can you advise on how to prevent this? Thanks!

Developed with Ilfosol 3.

https://preview.redd.it/7id8pxmzlbra1.jpg?width=960&format=pjpg&auto=webp&v=enabled&s=1fb3f13317ce83e2afb959299243a3120b6ce662