It does seem to be repeatable outside of that time window.
Here's that same query a moment ago:
2019-02-11 21:11:16 quantrocket.master: INFO Requesting option strike prices and expiries for conids 265598, 107113386, 208813720
2019-02-11 21:11:17 quantrocket.master: INFO Requesting option contract details for 13426 possible combinations of strike price and expiry for conids 265598, 107113386, 208813720
2019-02-11 21:12:17 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=51 (1)
2019-02-11 21:12:40 quantrocket.master: INFO Expected remaining runtime to collect listings: 0:25:45
2019-02-11 21:12:53 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=55 (2)
2019-02-11 21:13:02 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=57 (3)
2019-02-11 21:13:32 quantrocket.master: WARNING Disconnecting from gateways to force reconnect after DisconnectedGateway('ibg1 is no longer connected',) (retry 1 of 5)
2019-02-11 21:14:40 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=57 (1)
2019-02-11 21:14:49 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=56 (2)
2019-02-11 21:14:59 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=56 (3)
2019-02-11 21:15:29 quantrocket.master: WARNING Disconnecting from gateways to force reconnect after DisconnectedGateway('ibg1 is no longer connected',) (retry 2 of 5)
2019-02-11 21:15:40 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=58 (1)
2019-02-11 21:15:50 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=56 (2)
2019-02-11 21:15:59 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=59 (3)
2019-02-11 21:16:29 quantrocket.master: WARNING Disconnecting from gateways to force reconnect after DisconnectedGateway('ibg1 is no longer connected',) (retry 3 of 5)
2019-02-11 21:16:41 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=57 (1)
2019-02-11 21:16:50 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=55 (2)
2019-02-11 21:17:00 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=53 (3)
2019-02-11 21:17:30 quantrocket.master: WARNING Disconnecting from gateways to force reconnect after DisconnectedGateway('ibg1 is no longer connected',) (retry 4 of 5)
2019-02-11 21:17:42 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=59 (1)
2019-02-11 21:17:51 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=57 (2)
2019-02-11 21:18:46 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=56 (3)
2019-02-11 21:19:16 quantrocket.master: WARNING Disconnecting from gateways to force reconnect after DisconnectedGateway('ibg1 is no longer connected',) (retry 5 of 5)
2019-02-11 21:20:03 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=59 (1)
2019-02-11 21:20:13 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=55 (2)
2019-02-11 21:22:39 quantrocket.master: WARNING ibg1 client 2031 got IB error code 100: Max rate of messages per second has been exceeded:max=50 rec=53 (3)
2019-02-11 21:23:09 quantrocket.master: ERROR Traceback (most recent call last):
2019-02-11 21:23:09 quantrocket.master: ERROR File "sym://qrocket_log_py", line 34, in wrapped
2019-02-11 21:23:09 quantrocket.master: ERROR File "sym://qrocket_mule_py", line 92, in mule_collect_option_chains
2019-02-11 21:23:09 quantrocket.master: ERROR File "sym://qrocket_master_collect_options_py", line 88, in collect
2019-02-11 21:23:09 quantrocket.master: ERROR File "sym://qrocket_interactivebrokers_gateway_py", line 371, in wrapped_function
2019-02-11 21:23:09 quantrocket.master: ERROR File "sym://qrocket_master_collect_base_py", line 89, in request_contract_details
2019-02-11 21:23:09 quantrocket.master: ERROR qrocket.interactivebrokers.exceptions.DisconnectedGateway: ibg1 is no longer connected
2019-02-11 21:23:09 quantrocket.master: ERROR
Is there any additional information I can provide?