ok now I get this

jhgosselin@Master-VRTJMB:~/bitmain-tools/scripts$ ./l3plus_autotune.py -i 10.0.100.141
/usr/lib/python2.7/dist-packages/Crypto/Cipher/blockalgo.py:141: FutureWarning: CTR mode needs counter parameter, not IV
  self._cipher = factory.new(key, *args, **kwargs)
/config/sv binary not found on target miner, installing it first:
MD5sum [113ad2c06daac293386e28807ea35671] matches, good.
Binary /config/sv successfully installed.
Failed to decode json reply:
Expecting , delimiter: line 1 column 222 (char 221)

{"STATUS":[{"STATUS":"S","When":1529242535,"Code":70,"Msg":"CGMiner stats","Description":"cgminer 4.9.0"}],"STATS":[{"CGMiner":"4.9.0","Miner":"1.0.1.3","CompileTime":"Thu Apr 12 15:55:21 CST 2018","Type":"Antminer L3++"}{"STATS":0,"ID":"L30","Elapsed":68458,"Calls":0,"Wait":0.000000,"Max":0.000000,"Min":99999999.000000,"GHS 5s":"582.46","GHS av":588.22,"miner_count":4,"frequency":"456","fan_num":2,"fan1":3660,"fan2":3690,"temp_num":4,"temp1":56,"temp2":54,"temp3":53,"temp4":50,"temp2_1":65,"temp2_2":62,"temp2_3":61,"temp2_4":56,"temp31":0,"temp32":0,"temp33":0,"temp34":0,"temp4_1":0,"temp4_2":0,"temp4_3":0,"temp4_4":0,"temp_max":56,"Device Hardware%":0.0000,"no_matching_work":23283,"chain_acn1":72,"chain_acn2":72,"chain_acn3":72,"chain_acn4":72,"chain_acs1":" oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo","chain_acs2":" oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo","chain_acs3":" oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo","chain_acs4":" oooooooo oooooooo oooooooo oooooooo oooxoooo oooooooo oooooooo oooooooo oooooooo","chain_hw1":4670,"chain_hw2":167,"chain_hw3":697,"chain_hw4":17749,"chain_rate1":"139.24","chain_rate2":"155.34","chain_rate3":"146.29","chain_rate4":"141.59"}],"id":1}
jhgosselin@Master-VRTJMB:~/bitmain-tools/scripts$