The newly measurement of production fractions of $P_c$ states by LHCb collaboration have put restriction on their branching ratios of $J/psi p$ decay, thus constraining their photoproduction in $gamma pto J/psi p$ reaction. We show the tension between LHCb results and the current experiments in search of $P_c$ photoproduction. We also find that the present information of branching ratios of $P_cto J/psi p$ has already confronted sharply with the models which study the nature of $P_c$.
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