Conflicts with an existing library

hello friends,

I am new on seafile after spending many time with nextcloud. Seafile provides everything I need and working very smooth between win, android, ios and linux platforms. but…

I need to sync an specific directory under C:/ once I succesfully syncronized the directory and I removed the library after I was done with it. I need it again and have to sync the directory again and having confllicts with an existing library. Looking forward to your helps.