ValueError: x and y must have same first dimension, but have shapes (11,) and (15406,

[hobbyist]

So, I tried a mix of the code you posted above + stackoverflow code from your link. This is what I am trying:

time = mdates.drange(dt.datetime(2021, 3, 1, 0, 0, 0), dt.datetime(2021, 3, 3, 1, 0, 0), dt.timedelta(hours=6))
y = trainPredictPlot
fig, ax = plt.subplots()
ax.plot(time,y)
start, end = ax.get_xlim()
ax.xaxis.set_ticks(np.arange(start, end, 10))
ax.xaxis.set_major_formatter(ticker.FormatStrFormatter('%0.1f'))
plt.show()

The error I got a similar error:

Error:
ValueError: x and y must have same first dimension, but have shapes (9,) and (15406, 1)

The problem starts at line 4. It does not run from line 4 and down...