Hi Prashanth,
As the .xsaccess file implies, you need at least the application privilege "p1940932600trial.newtrialinstance.shine.SHINE::Basic" to access the app. Usually this application privilege is included in a certain hdbrole in SHINE.
Since you use HCP trial, I think you need to call HCP.HCP_GRANT_ROLE_TO_USER to grant the hdbrole to your end user P1940932600.
You can have a look at this help doc SAP HANA Cloud Platform and this unit in "Next Steps in SAP HANA Cloud Platform" course on openSAP https://open.sap.com/courses/hanacloud2-1/items/5h5JCEQCIvj6NOSztZpSX1
Best regards,
Wenjun