Error Submitting to the Blockchain

When I log in chainbb.com and post in travel forum, it shows:

Error Submitting to the Blockchain

_c.abs_rshares == 0: Comment must not have been voted on before specifying beneficiaries.

https://beta.chainbb.com/forum/travel

10 assert_exception: Assert Exception
_c.abs_rshares == 0: Comment must not have been voted on before specifying beneficiaries.
{}
th_a steem_evaluator.cpp:423 operator()

{"op":["comment_options",{"author":"chantha","permlink":"water-festival-in-cambodia-bonn-om-touk","max_accepted_payout":"1000000.000 SBD","percent_steem_dollars":10000,"allow_votes":true,"allow_curation_rewards":true,"extensions":[[0,{"beneficiaries":[{"account":"chainbb","weight":1500}]}]]}]}
th_a  database.cpp:2885 _apply_transaction

{"trx":{"ref_block_num":14791,"ref_block_prefix":1893401496,"expiration":"2017-07-11T05:16:42","operations":[["comment",{"parent_author":"","parent_permlink":"travel","author":"chantha","permlink":"water-festival-in-cambodia-bonn-om-touk","title":"Water Festival in Cambodia - Bonn Om Touk","body":"![Water](http://i.imgur.com/i2VbvYa.png)\nThe Water Festival, called Bonn Om Touk, is one of the famous national ceremonies in Cambodia, which celebrate every year for three days in November and marks a reversal of the flow of the Tonele Sap River. The Water Festival is one of the major events in Cambodia which attracts a lot of people from the various provinces to the capital Phnom Penh including foreigner tourists. \n![Festival](http://i.imgur.com/VvuCXw5.png)\nMost Cambodia people from every town and province are planning to visit the water festival for three day in Phnom Penh because it was really exciting and biggest celebration take place in Phnom Penh with boat racing along the Sisowath Quay. \nThey arrive Phnom Penh by buses, cars, bikes, cyclos, bicycles, boats and trucks. Many stay over in the guesthouses, hotels, schools, relative houses and even pagodas during the three-day festival in order to support their boat team. Others use this opportunity to explore the sights and sounds of Phnom Penh – for many it is the only occasion to visit the city. It was really happy to see everything there, and there were a lot of people watching boat, racing and walking around. \n![Festival](http://i.imgur.com/ln6Di4j.png)\nThe timing of Bon Om Touk also marks the changing direction of the Tonle Sap River which is a unique natural phenomenon that has not happened anywhere else in the world. During the rainy season, the heavy monsoons force the waters of the Mekong to flow back upstream along the Tonle Sap River to the Tonle Sap Lake. As the rains slow and the water level recedes, the river’s direction once again flows towards the sea, leaving behind rich silt to nourish the lands and plenty of fish to nourish the people. \nBoat Racing \nMore than 400 boats in front of Royal Palace, propelled by precision-trained oarsmen, take part in the annual boat race, the highlight of the Water Festival or Bonn Om Touk. Boat Racing is the biggest event in the Water Festival with the colorful boat races are remarkably similar to the 800-year-old engravings on the Angkor temples. Made in the same style, the brightly-colored boats sit low on the water and are manned by anywhere from thirty to eighty people, with a captain who dances to the rhythm of the drums on the bow as encouragement to the rowers as they move swiftly through the water.  \n![Festival](http://i.imgur.com/o8FfJ9d.png)\nLoy Pratip (Illuminated fluvial parade): Historically a candle-lit naval procession, these days this is a spectacle in its own right, where beautifully bedecked boats drift up and down the waterways. \n![Festival](http://i.imgur.com/iBO1y7Y.png)\nSampeas Preah Khe (Full moon ceremony): A good sign of the coming harvest, November’s full moon is celebrated with salutations and offerings throughout the country, with locals praying for a bountiful yield. \n![Festival](http://i.imgur.com/Q4G86Im.png)\nOrk Ambok: A traditional delicacy made of flattened rice, bananas, and coconut, traditionally eaten after midnight, when revelers gather at the cities to celebrate the harvest moon. \n![Festival](http://i.imgur.com/33Ar2qg.png)\nThis year 2017, the Water Festival falls on November 2nd to 4th to coincide with the full moon of the Buddhist calendar month of Kadeuk. \nPlease come to join Water Festival.   ","json_metadata":"{\"app\":\"chainbb/0.3\",\"format\":\"markdown+html\",\"tags\":[\"travel\",\"life\",\"welcome\",\"story\",\"history\"]}"}],["comment_options",{"author":"chantha","permlink":"water-festival-in-cambodia-bonn-om-touk","max_accepted_payout":"1000000.000 SBD","percent_steem_dollars":10000,"allow_votes":true,"allow_curation_rewards":true,"extensions":[[0,{"beneficiaries":[{"account":"chainbb","weight":1500}]}]]}]],"extensions":[],"signatures":["1f7c423b1ef1f3fb2b5f5a4efc597178369b620a108b6df8e91e79213c43dcd39f5478dc8fb236fd2153b42ccd21ca61b87b34465bb62449a79ce3762b633665f5"]}}
th_a  database.cpp:2889 _apply_transaction

{"trx":{"ref_block_num":14791,"ref_block_prefix":1893401496,"expiration":"2017-07-11T05:16:42","operations":[["comment",{"parent_author":"","parent_permlink":"travel","author":"chantha","permlink":"water-festival-in-cambodia-bonn-om-touk","title":"Water Festival in Cambodia - Bonn Om Touk","body":"![Water](http://i.imgur.com/i2VbvYa.png)\nThe Water Festival, called Bonn Om Touk, is one of the famous national ceremonies in Cambodia, which celebrate every year for three days in November and marks a reversal of the flow of the Tonele Sap River. The Water Festival is one of the major events in Cambodia which attracts a lot of people from the various provinces to the capital Phnom Penh including foreigner tourists. \n![Festival](http://i.imgur.com/VvuCXw5.png)\nMost Cambodia people from every town and province are planning to visit the water festival for three day in Phnom Penh because it was really exciting and biggest celebration take place in Phnom Penh with boat racing along the Sisowath Quay. \nThey arrive Phnom Penh by buses, cars, bikes, cyclos, bicycles, boats and trucks. Many stay over in the guesthouses, hotels, schools, relative houses and even pagodas during the three-day festival in order to support their boat team. Others use this opportunity to explore the sights and sounds of Phnom Penh – for many it is the only occasion to visit the city. It was really happy to see everything there, and there were a lot of people watching boat, racing and walking around. \n![Festival](http://i.imgur.com/ln6Di4j.png)\nThe timing of Bon Om Touk also marks the changing direction of the Tonle Sap River which is a unique natural phenomenon that has not happened anywhere else in the world. During the rainy season, the heavy monsoons force the waters of the Mekong to flow back upstream along the Tonle Sap River to the Tonle Sap Lake. As the rains slow and the water level recedes, the river’s direction once again flows towards the sea, leaving behind rich silt to nourish the lands and plenty of fish to nourish the people. \nBoat Racing \nMore than 400 boats in front of Royal Palace, propelled by precision-trained oarsmen, take part in the annual boat race, the highlight of the Water Festival or Bonn Om Touk. Boat Racing is the biggest event in the Water Festival with the colorful boat races are remarkably similar to the 800-year-old engravings on the Angkor temples. Made in the same style, the brightly-colored boats sit low on the water and are manned by anywhere from thirty to eighty people, with a captain who dances to the rhythm of the drums on the bow as encouragement to the rowers as they move swiftly through the water.  \n![Festival](http://i.imgur.com/o8FfJ9d.png)\nLoy Pratip (Illuminated fluvial parade): Historically a candle-lit naval procession, these days this is a spectacle in its own right, where beautifully bedecked boats drift up and down the waterways. \n![Festival](http://i.imgur.com/iBO1y7Y.png)\nSampeas Preah Khe (Full moon ceremony): A good sign of the coming harvest, November’s full moon is celebrated with salutations and offerings throughout the country, with locals praying for a bountiful yield. \n![Festival](http://i.imgur.com/Q4G86Im.png)\nOrk Ambok: A traditional delicacy made of flattened rice, bananas, and coconut, traditionally eaten after midnight, when revelers gather at the cities to celebrate the harvest moon. \n![Festival](http://i.imgur.com/33Ar2qg.png)\nThis year 2017, the Water Festival falls on November 2nd to 4th to coincide with the full moon of the Buddhist calendar month of Kadeuk. \nPlease come to join Water Festival.   ","json_metadata":"{\"app\":\"chainbb/0.3\",\"format\":\"markdown+html\",\"tags\":[\"travel\",\"life\",\"welcome\",\"story\",\"history\"]}"}],["comment_options",{"author":"chantha","permlink":"water-festival-in-cambodia-bonn-om-touk","max_accepted_payout":"1000000.000 SBD","percent_steem_dollars":10000,"allow_votes":true,"allow_curation_rewards":true,"extensions":[[0,{"beneficiaries":[{"account":"chainbb","weight":1500}]}]]}]],"extensions":[],"signatures":["1f7c423b1ef1f3fb2b5f5a4efc597178369b620a108b6df8e91e79213c43dcd39f5478dc8fb236fd2153b42ccd21ca61b87b34465bb62449a79ce3762b633665f5"]}}
th_a  database.cpp:660 push_transaction

{"call.method":"call","call.params":[3,"broadcast_transaction_with_callback",[null,{"ref_block_num":14791,"ref_block_prefix":1893401496,"expiration":"2017-07-11T05:16:42","operations":[["comment",{"parent_author":"","parent_permlink":"travel","author":"chantha","permlink":"water-festival-in-cambodia-bonn-om-touk","title":"Water Festival in Cambodia - Bonn Om Touk","body":"![Water](http://i.imgur.com/i2VbvYa.png)\nThe Water Festival, called Bonn Om Touk, is one of the famous national ceremonies in Cambodia, which celebrate every year for three days in November and marks a reversal of the flow of the Tonele Sap River. The Water Festival is one of the major events in Cambodia which attracts a lot of people from the various provinces to the capital Phnom Penh including foreigner tourists. \n![Festival](http://i.imgur.com/VvuCXw5.png)\nMost Cambodia people from every town and province are planning to visit the water festival for three day in Phnom Penh because it was really exciting and biggest celebration take place in Phnom Penh with boat racing along the Sisowath Quay. \nThey arrive Phnom Penh by buses, cars, bikes, cyclos, bicycles, boats and trucks. Many stay over in the guesthouses, hotels, schools, relative houses and even pagodas during the three-day festival in order to support their boat team. Others use this opportunity to explore the sights and sounds of Phnom Penh – for many it is the only occasion to visit the city. It was really happy to see everything there, and there were a lot of people watching boat, racing and walking around. \n![Festival](http://i.imgur.com/ln6Di4j.png)\nThe timing of Bon Om Touk also marks the changing direction of the Tonle Sap River which is a unique natural phenomenon that has not happened anywhere else in the world. During the rainy season, the heavy monsoons force the waters of the Mekong to flow back upstream along the Tonle Sap River to the Tonle Sap Lake. As the rains slow and the water level recedes, the river’s direction once again flows towards the sea, leaving behind rich silt to nourish the lands and plenty of fish to nourish the people. \nBoat Racing \nMore than 400 boats in front of Royal Palace, propelled by precision-trained oarsmen, take part in the annual boat race, the highlight of the Water Festival or Bonn Om Touk. Boat Racing is the biggest event in the Water Festival with the colorful boat races are remarkably similar to the 800-year-old engravings on the Angkor temples. Made in the same style, the brightly-colored boats sit low on the water and are manned by anywhere from thirty to eighty people, with a captain who dances to the rhythm of the drums on the bow as encouragement to the rowers as they move swiftly through the water.  \n![Festival](http://i.imgur.com/o8FfJ9d.png)\nLoy Pratip (Illuminated fluvial parade): Historically a candle-lit naval procession, these days this is a spectacle in its own right, where beautifully bedecked boats drift up and down the waterways. \n![Festival](http://i.imgur.com/iBO1y7Y.png)\nSampeas Preah Khe (Full moon ceremony): A good sign of the coming harvest, November’s full moon is celebrated with salutations and offerings throughout the country, with locals praying for a bountiful yield. \n![Festival](http://i.imgur.com/Q4G86Im.png)\nOrk Ambok: A traditional delicacy made of flattened rice, bananas, and coconut, traditionally eaten after midnight, when revelers gather at the cities to celebrate the harvest moon. \n![Festival](http://i.imgur.com/33Ar2qg.png)\nThis year 2017, the Water Festival falls on November 2nd to 4th to coincide with the full moon of the Buddhist calendar month of Kadeuk. \nPlease come to join Water Festival.   ","json_metadata":"{\"app\":\"chainbb/0.3\",\"format\":\"markdown+html\",\"tags\":[\"travel\",\"life\",\"welcome\",\"story\",\"history\"]}"}],["comment_options",{"author":"chantha","permlink":"water-festival-in-cambodia-bonn-om-touk","max_accepted_payout":"1000000.000 SBD","percent_steem_dollars":10000,"allow_votes":true,"allow_curation_rewards":true,"extensions":[[0,{"beneficiaries":[{"account":"chainbb","weight":1500}]}]]}]],"extensions":[],"signatures":["1f7c423b1ef1f3fb2b5f5a4efc597178369b620a108b6df8e91e79213c43dcd39f5478dc8fb236fd2153b42ccd21ca61b87b34465bb62449a79ce3762b633665f5"]}]]}
th_a  websocket_api.cpp:124 on_message (see err.payload for the full error payload)

Please help solve this problem?

Thank you very much for your help in advance.