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issue on notification, write and read.

I'm using sdk15.0.0 and device nrf52840 

I have 5 services among them only 1 service is for notifications and remaining services for reading and writes functionality.

Here when I'm continuously Notifying the characteristics and at the same time performing reading and writing operations from other services using nrf connect app.

at this point of time the device gets disconnected and going to hard fault condition.

some times void Pendsv_handler is coming.

can everyone help me with this?

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