How to overcome this error? help me

I have installed seafile but there are some that I would ask is:

  1. error while uploading : http://prnt.sc/cp5o27
  2. absence for file searches. : http://prnt.sc/cp5o6s
  3. how can view the text file office? http://prnt.sc/cp5oau

and how can I set user quotas?

untuku is there a solution?

  1. and 3) are pro feature only. You can preview .odt files: https://www.seafile.com/en/product/private_server/
    You can set user quota in the admin area

for 1) you should give more information.
What do the logs look like? How have you configured Seafile or Webserver?

I can not set the quota at the admin pages CE, like where I can set the quota of each user?

System Admin -> Users -> click on a username -> Profile -> Set quota

already address this problem the result is good, do not receive an activation email users?