[BUG] Unable confirm invoice

[cameri]

Describe the bug
Unable to confirm invoice because it is pending.

To Reproduce
TBD

Expected behavior
Invoice is either not confirmed or ignored.

Screenshots
If applicable, add screenshots to help explain your problem.

System (please complete the following information):

• OS: [e.g. Ubuntu]
• Platform: [e.g. docker, standalone]
• Version: [e.g. 1.9.11]

Logs
If applicable, attach log messages showing the bug and context when the bug happened.

Unable to update invoice. Reason: error: insert into "invoices" ("amount_requested", "bolt11", "created_at", "description", "expires_at", "id", "pubkey", "status", "unit", "updated_at") values ($1, DEFAULT, DEFAULT, $2, DEFAULT, $3, $4, $5, $6, $7) on conflict ("id") do update set "status" = $8,"updated_at" = $9 - null value in column "bolt11" of relation "invoices" violates not-null constraint
    at Parser.parseErrorMessage (/app/node_modules/pg-protocol/dist/parser.js:287:98)
    at Parser.handlePacket (/app/node_modules/pg-protocol/dist/parser.js:126:29)
    at Parser.parse (/app/node_modules/pg-protocol/dist/parser.js:39:38)
    at Socket.<anonymous> (/app/node_modules/pg-protocol/dist/index.js:11:42)
    at Socket.emit (node:events:513:28)
    at addChunk (node:internal/streams/readable:324:12)
    at readableAddChunk (node:internal/streams/readable:297:9)
    at Readable.push (node:internal/streams/readable:234:10)
    at TCP.onStreamRead (node:internal/stream_base_commons:190:23) {
  length: 478,
  severity: 'ERROR',
  code: '23502',
  detail: 'Failing row contains (ece279c3-7e88-44cc-87b3-94010eedc5eb, \\x0000006a13e10fb648049b5e78632a0c2bf09eaf6a9d55d081b82baf86c951..., null, 5000000, null, msats, expired, eden.nostr.land Admission Fee for npub1qqqqq6snuy8mvjqynd08sce2p..., null, null, 2023-02-10 22:55:39.346619+00, 2023-02-10 22:55:39.335+00).',
  hint: undefined,
  position: undefined,
  internalPosition: undefined,
  internalQuery: undefined,
  where: undefined,
  schema: 'public',
  table: 'invoices',
  column: 'bolt11',
  dataType: undefined,
  constraint: undefined,
  file: 'execMain.c',
  line: '1883',
  routine: 'ExecConstraints'
}
Unable to persist invoice ece279c3-7e88-44cc-87b3-94010eedc5eb error: insert into "invoices" ("amount_requested", "bolt11", "created_at", "description", "expires_at", "id", "pubkey", "status", "unit", "updated_at") values ($1, DEFAULT, DEFAULT, $2, DEFAULT, $3, $4, $5, $6, $7) on conflict ("id") do update set "status" = $8,"updated_at" = $9 - null value in column "bolt11" of relation "invoices" violates not-null constraint
    at Parser.parseErrorMessage (/app/node_modules/pg-protocol/dist/parser.js:287:98)
    at Parser.handlePacket (/app/node_modules/pg-protocol/dist/parser.js:126:29)
    at Parser.parse (/app/node_modules/pg-protocol/dist/parser.js:39:38)
    at Socket.<anonymous> (/app/node_modules/pg-protocol/dist/index.js:11:42)
    at Socket.emit (node:events:513:28)
    at addChunk (node:internal/streams/readable:324:12)
    at readableAddChunk (node:internal/streams/readable:297:9)
    at Readable.push (node:internal/streams/readable:234:10)
    at TCP.onStreamRead (node:internal/stream_base_commons:190:23) {
  length: 478,
  severity: 'ERROR',
  code: '23502',
  detail: 'Failing row contains (ece279c3-7e88-44cc-87b3-94010eedc5eb, \\x0000006a13e10fb648049b5e78632a0c2bf09eaf6a9d55d081b82baf86c951..., null, 5000000, null, msats, expired, eden.nostr.land Admission Fee for npub1qqqqq6snuy8mvjqynd08sce2p..., null, null, 2023-02-10 22:55:39.346619+00, 2023-02-10 22:55:39.335+00).',
  hint: undefined,
  position: undefined,
  internalPosition: undefined,
  internalQuery: undefined,
  where: undefined,
  schema: 'public',
  table: 'invoices',
  column: 'bolt11',
  dataType: undefined,
  constraint: undefined,
  file: 'execMain.c',
  line: '1883',
  routine: 'ExecConstraints'
}
uncaught error: TypeError: invalid media type
    at Object.parse (/app/node_modules/content-type/index.js:126:11)
    at setCharset (/app/node_modules/express/lib/utils.js:254:28)
    at ServerResponse.send (/app/node_modules/express/lib/response.js:174:32)
    at postZebedeeCallbackRequestHandler (/app/src/handlers/request-handlers/post-zebedee-callback-request-handler.js:14:14)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

Unable to confirm invoice. Reason: Error: Invoice is not complete: pending
    at PaymentsService.confirmInvoice (/app/src/services/payments-service.js:120:23)
    at MaintenanceWorker.onSchedule (/app/src/app/maintenance-worker.js:51:46)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
Unable to update invoice from payment processor. Reason: Error: Unable to get transaction: transaction not started.
    at Transaction.rollback (/app/src/database/transaction.js:27:19)
    at PaymentsService.confirmInvoice (/app/src/services/payments-service.js:149:31)
    at MaintenanceWorker.onSchedule (/app/src/app/maintenance-worker.js:51:46)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

Additional context
Add any other context about the problem here.

[cameri]

Fixed in #204