Honestly, the problem is probably with the filepath. The use of non-standard characters is probably causing the issue. Try renaming the directories and/or files so they use only standard characters. You can test the fix by placing the file on your desktop (making sure it's name is compliant) and trying to import it.
What TimeRemapper said. rename your folders. This issue is caused by a mismatch of your system language settings vs. running AE in English. Working out the right combination should of course also fix the issue...
It worked , both what you said worked ,,
First I placed them on the desktop ,
Second I changed the names of the videos ,,
and both of them worked ,,
thanks a lot for your help ,
Mr. TimeRemapper & Mr. Mylenium
have a good day