So here's a single trade I found, shorting GBP/USD, marked in each of the 3 logs

Zorro Log:
(a) [GBP/USD:PD:S4135] Short 19@1.29198 Risk 384 t at 09:07:01
(b) Error 015: trade [GBP/USD:PD:S4135] bad exit price 0.0000
(c) [GBP/USD:PD:S4135] Cover 19@0.0: +24544 at 16:07:01


Mt4 Experts Log:
(a) 2020.02.21 04:07:00.365 Zorro EURUSD,M15: open #71254135 sell 0.19 GBPUSD at 1.29178 sl: 1.32178 ok
(b) 2020.02.21 11:07:00.852 Zorro EURUSD,M15: Close [GBPUSD:S4135] 0.19@1.2960
(c) 2020.02.21 11:07:00.930 Zorro EURUSD,M15: close #71254135 sell 0.19 GBPUSD at 1.29178 sl: 1.32178 at price 1.29597


Mt4 Journal:
(a) 2020.02.21 04:07:00.365 '314900': order was opened : #71254135 sell 0.19 GBPUSD at 1.29178 sl: 1.32178 tp: 0.00000
(b) 2020.02.21 11:07:00.852 '314900': close order #71254135 sell 0.19 GBPUSD at 1.29178 sl: 1.32178 tp: 0.00000 at price 0.00000
(c) 2020.02.21 11:07:00.930 '314900': order #71254135 sell 0.19 GBPUSD at 1.29178 sl: 1.32178 tp: 0.00000 closed at price 1.29597




That Error 015 in the Zorro log is something I've been seeing often while running the system too. To be honest I'm not even 100% sure what to look out for here, but the 'bad exit price 0.0000' stands out to me as strange.