The first thing you should try is to turn it off and back on again. Assuming that your iPad still has some battery life remaining, restart the iPad and then try to charge it again. There's a good chance that the simple act of rebooting it will solve the charging problem.
If the problem still persists, check out the [https://support.apple.com/en-us/HT201569|Apple guides].
'''Follow These Quick Tips To Get Sound Back On Your iPad!'''
* Toggle Mono Audio On and Off
* Plug and unplug headphones for devices with a headphone jack
* Toggle your iPad’s Side Switch (if applicable)
* Change your iPad’s Side Switch Setting to lock orientation instead of mute
* Open Control Center and adjust Mute or Volume from there
* Toggle Bluetooth Off and On
* Check the Do Not Disturb is off
* Restart or force restart your iPad