Output stops after a while loop, without using "or die()" - php

Question

I know there is another question with the same topic, but that question involves the or die() statement. I have the same problem, but i'm not using a or die() statement on my while loop. The answer is probably pretty obvious, but i can't figure it out.
$Dates = "1";
$Select = $mysqli->query("SELECT * FROM ----");
while ($Dates != "") {
$Dates = $Select->fetch_assoc();
$Get = $mysqli->query("SELECT * FROM " . $Dates["Meeting_Date"] . " WHERE Last_Name='" . $LName . "'");
$Vals = $Get->fetch_assoc();
if ($Vals != "") {
$TimeIn = $Vals["Time_In"];
$TimeIn2 = explode(":",$TimeIn);
$TotIn = ($TimeIn2[0]*60)+$TimeIn2[1];
$TimeOut = $Vals["Time_Out"];
$TimeOut2 = explode(":",$TimeOut);
$TotOut = ($TimeOut2[0]*60)+$TimeOut2[1];
$TotTime = ($TotOut - $TotIn)/60;
$TotalTime = floor($TotTime) . " Hours " . ($TotTime-floor($TotTime))*60 . " Minutes";
echo "<tr><td>" . str_replace("_","/",$Dates["Meeting_Date"]) . "</td><td>" . $TimeIn . "</td><td>" . $TimeOut . "</td><td>" . $TotalTime . "</td></tr>";
}
if ($Vals == "") {
echo "<tr><td>" . str_replace("_","/",$Dates["Meeting_Date"]) . "</td><td colspan='3' style='background-color: rgba(0,0,0,0.25)'>Did not Attend</td></tr>";
}
}
Anything i put after the while loop, doesn't get executed, even though the while loop only executes 2 times like it is supposed to...
Any ideas are appreciated

Answer 1

This is the problem:
while ($Dates != "") {
$Dates = $Select->fetch_assoc();
$Get = $mysqli->query("SELECT * FROM " . $Dates["Meeting_Date"] . " WHERE Last_Name='" . $LName . "'");
When there are no more records, $Dates will be empty (NULL) so the next line will lead to a fatal error.
You can change it to:
while ($Dates = $Select->fetch_assoc()) {
$Get = $mysqli->query("SELECT * FROM " . $Dates["Meeting_Date"] . " WHERE Last_Name='" . $LName . "'");