SQL Server 2017 python Machine learning service

I create the stored procedure SerializePlots:

USE Pytest
GO

ALTER PROCEDURE [dbo].[SerializePlots]
AS
BEGIN
    SET NOCOUNT ON;
    DECLARE @query nvarchar(max) =
N'SELECT cast(tipped as int) as tipped, tip_amount, fare_amount FROM [dbo].[nyctaxi_sample]'
    EXECUTE sp_execute_external_script
            @language = N'Python',
            @script = N'
import matplotlib
matplotlib.use("Agg")
import matplotlib.pyplot as plt
import pandas as pd
import pickle

fig_handle = plt.figure()
plt.hist(InputDataSet.tipped)
plt.xlabel("Tipped")
plt.ylabel("Counts")
plt.title("Histogram, Tipped")
plot0 = pd.DataFrame(data =[pickle.dumps(fig_handle)], columns =["plot"])
plt.clf()

plt.hist(InputDataSet.tip_amount)
plt.xlabel("Tip amount ($)")
plt.ylabel("Counts")
plt.title("Histogram, Tip amount")
plot1 = pd.DataFrame(data =[pickle.dumps(fig_handle)], columns =["plot"])
plt.clf()

plt.hist(InputDataSet.fare_amount)
plt.xlabel("Fare amount ($)")
plt.ylabel("Counts")
plt.title("Histogram, Fare amount")
plot2 = pd.DataFrame(data =[pickle.dumps(fig_handle)], columns =["plot"])
plt.clf()

plt.scatter( InputDataSet.fare_amount, InputDataSet.tip_amount)
plt.xlabel("Fare Amount ($)")
plt.ylabel("Tip Amount ($)")
plt.title("Tip amount by Fare amount")
plot3 = pd.DataFrame(data =[pickle.dumps(fig_handle)], columns =["plot"])
plt.clf()

OutputDataSet = plot0.append(plot1, ignore_index=True).append(plot2, ignore_index=True).append(plot3, ignore_index=True)
',
@input_data_1 = @query
WITH RESULT SETS ((plot varbinary(max)))
END
GO 

Then I run the stored procedure:

EXEC [dbo].[SerializePlots]

But I get an error:

Msg 39004, Level 16, State 20, Line 65
A 'Python' script error occurred during execution of 'sp_execute_external_script' with HRESULT 0x80004004.

Msg 39019, Level 16, State 2, Line 65
An external script error occurred:

Invalid BXL stream

STDOUT message(s) from external script:
SqlSatelliteCall function failed. Please see the console output for more information.
Traceback (most recent call last):
File "C:\Program Files\Microsoft SQL Server\MSSQL14.MSSQLSERVERML\PYTHON_SERVICES\lib\site-packages\revoscalepy\computecontext\RxInSqlServer.py", line 406, in rx_sql_satellite_call
rx_native_call("SqlSatelliteCall", params)
File "C:\Program Files\Microsoft SQL Server\MSSQL14.MSSQLSERVERML\PYTHON_SERVICES\lib\site-packages\revoscalepy\RxSerializable.py", line 291, in rx_native_call
ret = px_call(functionname, params)
RuntimeError: Failed to reallocate 38785290ll bytes of memory.
Failed to reallocate 38785290ll bytes of memory.