What is the client is missing required entitlement error?

Question

iOS

2020-06-07 03:28:07.475192+0300 App[1650:1126270] [assertion] Error acquiring assertion: <NSError: 0x28156b0f0; domain: RBSAssertionErrorDomain; code: 2; reason: "Client is missing required entitlement"> {
    userInfo = {
        RBSAssertionAttribute = <RBSLegacyAttribute: 0x13b12cc30; requestedReason: MediaPlayback; reason: MediaPlayback; flags: PreventTaskSuspend | PreventTaskThrottleDown | WantsForegroundResourcePriority>;
    }
}
2020-06-07 03:28:07.475721+0300 App[1650:1126270] [ProcessSuspension]  0x106cda3a0 - ProcessAssertion() PID 1650 Unable to acquire assertion for process with PID 1650
2020-06-07 03:28:07.475784+0300 App[1650:1126090] [ProcessSuspension] 0x106cda3a0 - ProcessAssertion::processAssertionWasInvalidated()
2020-06-07 03:28:07.477090+0300 App[1650:1126270] [assertion] Error acquiring assertion: <NSError: 0x28156b0c0; domain: RBSAssertionErrorDomain; code: 2; reason: "Client is missing required entitlement"> {
    userInfo = {
        RBSAssertionAttribute = <RBSLegacyAttribute: 0x13b106d60; requestedReason: MediaPlayback; reason: MediaPlayback; flags: PreventTaskSuspend | PreventTaskThrottleDown | WantsForegroundResourcePriority>;
    }
}
2020-06-07 03:28:07.477198+0300 App[1650:1126270] [ProcessSuspension]  0x106cda3f0 - ProcessAssertion() PID 1650 Unable to acquire assertion for process with PID 1651
2020-06-07 03:28:07.477240+0300 App[1650:1126090] [ProcessSuspension] 0x106cda3f0 - ProcessAssertion::processAssertionWasInvalidated()

I'm trying to play audio via js, the sound of the first package is played after this error crashes