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<b>Warning</b>:  Undefined array key "from" in <b>/home/miguelde/modulo4.migueldebarba.com.br/insertleitura.php</b> on line <b>2</b><br />
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<b>Warning</b>:  Undefined array key "mac_idmac" in <b>/home/miguelde/modulo4.migueldebarba.com.br/insertleitura.php</b> on line <b>3</b><br />
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<b>Warning</b>:  Undefined array key "valor" in <b>/home/miguelde/modulo4.migueldebarba.com.br/insertleitura.php</b> on line <b>4</b><br />
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<b>Warning</b>:  include(conectabanco.php): Failed to open stream: No such file or directory in <b>/home/miguelde/modulo4.migueldebarba.com.br/insertleitura.php</b> on line <b>18</b><br />
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<b>Warning</b>:  include(): Failed opening 'conectabanco.php' for inclusion (include_path='.:/opt/alt/php82/usr/share/pear:/opt/alt/php82/usr/share/php:/usr/share/pear:/usr/share/php') in <b>/home/miguelde/modulo4.migueldebarba.com.br/insertleitura.php</b> on line <b>18</b><br />
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<b>Warning</b>:  Undefined variable $conn in <b>/home/miguelde/modulo4.migueldebarba.com.br/insertleitura.php</b> on line <b>22</b><br />
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<b>Fatal error</b>:  Uncaught Error: Call to a member function prepare() on null in /home/miguelde/modulo4.migueldebarba.com.br/insertleitura.php:22
Stack trace:
#0 {main}
  thrown in <b>/home/miguelde/modulo4.migueldebarba.com.br/insertleitura.php</b> on line <b>22</b><br />
