ocs 2.4 update and fragment package download

hello,

After an update to ocs server 2.4, agent can't download fragment packages :

WARNING *** DOWNLOAD => Failed to download package fragment <1507276266-1> (HTTP Status Code #404). Retrying
    COM SERVER => Initializing cURL library for getFile
    COM SERVER => Using cURL without server authentication
    COM SERVER => Disabling cURL proxy support
    COM SERVER => Enabling cURL SSL server validation support using CA Bundle <rectorat.crt>
    COM SERVER => Sending fileGet request to URL <HTTP://MYSERVER/download/1507276266/1507276266-1>
    COM SERVER => fileGet response received <HTTP Status Code #404>
    COM SERVER => Cleaning cURL library
    WARNING *** DOWNLOAD =>  Max error count (5) reached while downloading package fragment <1507276266-1> (HTTP Status Code #404)
    DOWNLOAD => Pausing for fragment latency (2 seconds)
    DOWNLOAD => Pausing for cycle latency (10 seconds)
    DOWNLOAD => Processing packages for cycle 6 on Tuesday, February 27, 2018 11:04:05
    DOWNLOAD => Pausing for cycle latency (10 seconds)
    DOWNLOAD => Processing packages for cycle 7 on Tuesday, February 27, 2018 11:04:15
    DOWNLOAD => Pausing for cycle latency (10 seconds)
    DOWNLOAD => Processing packages for cycle 8 on Tuesday, February 27, 2018 11:04:25
    DOWNLOAD => Pausing for cycle latency (10 seconds)
    DOWNLOAD => Processing packages for cycle 9 on Tuesday, February 27, 2018 11:04:35
    DOWNLOAD => Pausing for cycle latency (10 seconds)

I can download fragment in https but i can't configure https url in ocs configuration.