What happened with Liuli unilaterally terminating the contract with Mango TV? What is the specific situation?

What happened with Liuli unilaterally terminating the contract with Mango TV? What is the specific situation? The TV series "Liuli" cannot be released due to "a certain platform unilaterally canceling the contract", Mango TV said it would take legal action to protect its rights

At around 17:00 on the afternoon of August 6, Mango TV released an "Apology Statement" through its official blog, saying that the TV series "Liuli", which was originally scheduled to be launched on Mango TV on the evening of the 6th, was unable to be released because a certain platform suddenly unilaterally proposed to terminate the contract on the evening of August 5, 2020 and refused to deliver the playback media to Mango TV. For this, Mango TV expresses its sincere apologies to all users.
"Liuli" is adapted from the novel of the same name by the author Shi Silang. It tells the story of Chu Xuan Ji, a girl born with incomplete "six senses", and Yu Si Feng, a disciple of the Lize Palace, who, under the dual pressure of love and conspiracy in their previous lives, join hands to face all kinds of bloody storms, creating a colorful fairy tale legend. The drama brings together idol actors such as Cheng Yi and Yuan Bingyan. Previous reports showed that Youku and Mango TV are co-broadcasters.
Although Mango TV’s statement only pointed out “a certain platform”, netizens pointed the finger at Youku in their comments, questioning its disrespect for business rules. Mango TV stated that it was still trying hard until the last moment before issuing this statement, but unfortunately failed to resolve the issue. Mango TV emphasized that it will take all legal measures to safeguard the legitimate rights and interests of itself and its users.