Hi,
Can you please refer the following SAP KBA Note and check whether it helps you:
1800359 - Warning message regarding MIME object "xxxxxxxxx" does not exist
This SAP KBA Note 1800359 can be referred for Release 7.40 too.
Also, please note that Patch Level 0 is not supported for BI Java(7.40) components:
BI-BASE-B, BI-BASE-E, BI-BASE-S, BI-IBC and BIWEBAPP as per the following SAP KBA Note:
1899396 - Patch Level 0 for BI Java installation - Detailed Information
Please go through this SAP KBA Note 1899396 for details.
And, please note that it is always recommended to use latest SPS level for both ABAP(7.40) Stack and Java(7.40) Stack and then apply latest SP Level and Patch Level for BI Java(7.40) components (as it contains latest fixes and recent corrections) and then restart the Java server while running BW BEx (7.x) reports in the Java web side.
You can use Telnet to apply latest SP and Patch Level for BI Java(7.40) components as per
the following SAP KBA Note:
1906520 - Deploying BI Java patches using Telnet
Thanks & Regards,
Sapna