FTP directory created successfuly, but curl returns with error about curl HOT 3 CLOSED

handle <- curl::new_handle(userpwd = "dlpuser:rNrKYTX9g7z3RgJRmxWuGHbeu", httpauth = 1, ftp_create_missing_dirs = 1L, verbose=T)
curl::curl_fetch_memory("ftp://ftp.dlptest.com/mytest3/", handle = handle)

curl::curl_upload('test.txt', "ftp://ftp.dlptest.com/mytest/test.txt", 
                  userpwd = "dlpuser:rNrKYTX9g7z3RgJRmxWuGHbeu", httpauth = 1, ftp_create_missing_dirs = 1L)

h <- curl::handle_setopt(curl::new_handle(), userpwd = "dlpuser:rNrKYTX9g7z3RgJRmxWuGHbeu", httpauth = 1, customrequest = "FEAT", verbose = TRUE)
curl::curl_fetch_memory("ftp://ftp.dlptest.com/", handle = h)
# * Too old connection (143 seconds idle), disconnect it
# * Connection 1 seems to be dead
# * Closing connection 1
# *   Trying 44.241.66.173:21...
# * Connected to ftp.dlptest.com (44.241.66.173) port 21 (#2)
# < 220 Welcome to the DLP Test FTP Server
# > USER dlpuser
# < 331 Please specify the password.
# > PASS rNrKYTX9g7z3RgJRmxWuGHbeu
# < 230 Login successful.
# > PWD
# < 257 "/"
# * Entry path is '/'
# * Request has same path as previous transfer
# > EPSV
# * Connect data stream passively
# * ftp_perform ends with SECONDARY: 0
# < 229 Entering Extended Passive Mode (|||1041|).
# *   Trying 44.241.66.173:1041...
# * Connecting to 44.241.66.173 (44.241.66.173) port 1041
# * Connected to ftp.dlptest.com (44.241.66.173) port 21 (#2)
# > TYPE A
# < 200 Switching to ASCII mode.
# > FEAT
# < 211-Features:
# <  AUTH TLS
# <  EPRT
# <  EPSV
# <  MDTM
# <  PASV
# <  PBSZ
# <  PROT
# <  REST STREAM
# <  SIZE
# <  TVFS
# <  UTF8
# < 211 End
# * RETR response: 211
# * Remembering we are in dir ""
# * Connection #2 to host ftp.dlptest.com left intact
# Error in curl::curl_fetch_memory("ftp://ftp.dlptest.com/", handle = h) : 
#> Error in curl::curl_fetch_memory("ftp://ftp.dlptest.com/", handle = h): RETR response: 211