Although I have completed all the tasks on the map, my star map is not completed and I cannot open a steel path.

[Jalousie]

star map xp seems to be completed but my star map is showing 236/241 and it is not completed 236 is also stuck. what is the reason for this and what should I do? can you help me please?

[leqesai]

Did you do zariman?

[2GenL]

Complete all the nodes
Completing the star chart doesn't mean collect all the xp, it means finish all nodes

[Donitsi]

Star Chart isn't really completed if it is showing 236/241.

https://warframe.fandom.com/wiki/The_Steel_Path

"In order to access The Steel Path, players must have completed all nodes (excluding Mutalist Alad V and Jordas Golem Assassinates on Eris, and Duviri) on the connected Star Chart, including Dark Sectors, Lua, the Kuva Fortress, the Zariman Ten Zero. "

[9999999 in 1]

Open the steel path alert, it will show what else is needed to be finished.
It has an icon of a warning sign on your map.
Also you should be albe to check this thing with arbiters in any rele.