Related to #616

After pressing 'Excel' button:

biasedpathways:15710 Uncaught TypeError: Cannot set properties of null (setting 'innerHTML')
at biasedpathways:15710:77Understand this error

2biasedpathways:15743 Uncaught TypeError: Cannot set properties of null (setting 'innerHTML')
at biasedpathways:15743:77Understand this error

11gpcrdb.js:135 Uncaught ReferenceError: XLSX is not defined
at GlobalTableToExcel (gpcrdb.js:135:14)
at s.action (biasedpathways:15666:25)
at q (dataTables.buttons.min.js:13:281)
at HTMLButtonElement. (dataTables.buttons.min.js:14:111)
at HTMLButtonElement.dispatch (jquery-3.7.1.js:5145:27)
at elemData.handle (jquery-3.7.1.js:4949:28)Understand this error

biasedpathways:15743 Uncaught TypeError: Cannot set properties of null (setting 'innerHTML')
at biasedpathways:15743:77Understand this error

4gpcrdb.js:135 Uncaught ReferenceError: XLSX is not defined
at GlobalTableToExcel (gpcrdb.js:135:14)
at s.action (biasedpathways:15666:25)
at q (dataTables.buttons.min.js:13:281)
at HTMLButtonElement. (dataTables.buttons.min.js:14:111)
at HTMLButtonElement.dispatch (jquery-3.7.1.js:5145:27)
at elemData.handle (jquery-3.7.1.js:4949:28)Understand this error

3gpcrdb.js:135 Uncaught ReferenceError: XLSX is not defined
at GlobalTableToExcel (gpcrdb.js:135:14)
at s.action (biasedpathways:15666:25)
at q (dataTables.buttons.min.js:13:281)
at HTMLButtonElement. (dataTables.buttons.min.js:14:111)
at HTMLButtonElement.dispatch (jquery-3.7.1.js:5145:27)
at elemData.handle (jquery-3.7.1.js:4949:28)