impossible to use the work plan. . .

[Ricciolina]

Good afternoon to all.
This week they gave me a great job to do with revit, for my level of experience with the program, very complex, but I want to succeed!
once I traced the perimeter masonry, I also wanted to realize the floor of the ground floor and I got out this mistake, this notice.. .
Do I have to change some settings in the starting file? in the program?
I believe that until I can bring this job to an end I will need your help several times.
I apologize for leaving so and thank you in advance.
Hi.

 

[Tristan]

What work plan are you using on that view for curiosity?

 

[Ricciolina]

I've created so many things to accomplish that I can't answer now, I must have sent it to "tilt" :').
In the end, after several attempts, I deleted that file and reopened a new one that no longer gave me those problems.
Let's see how it goes with the next things. Thanks anyway.